Question

Решите даю 15 баллов и все уравнения и примеры с решением : 1)x+(-3)=-11 2)-5+u=15 3)m+(-12)=2 4)3+n=-10 5)(58-24)-65= 6)(17-35)+40= 7)-70+(32+19)= 8)-7-(-9-40)= 9)(-6-7)-2= 10)8-(-9+5) 11)-5-(-7-6)= 12)(-13+50)-2=

Answer 1

Ответ:

1) - 11+3 = - 8

X=-8

2) 15+5=20

U=20

3) 12+2=14

M= 14

4) - 10-3 =-13

N=-13

Answer 2

1. x + (-3) = -11

To solve this equation, we can simplify the left side by adding -3 to x:

x - 3 = -11

Next, we isolate x by adding 3 to both sides of the equation:

x - 3 + 3 = -11 + 3

This simplifies to:

x = -8

So the solution to the equation is x = -8.

2. -5 + u = 15

To solve for u, we can isolate it by subtracting -5 from both sides of the equation:

-5 + u - (-5) = 15 - (-5)

Simplifying this gives us:

u = 15 + 5

Therefore, u = 20.

3. m + (-12) = 2

We can simplify the left side by adding -12 to m:

m - 12 = 2

To isolate m, we add 12 to both sides of the equation:

m - 12 + 12 = 2 + 12

This simplifies to:

m = 14

So the solution is m = 14.

4. 3 + n = -10

To solve for n, we isolate it by subtracting 3 from both sides of the equation:

3 + n - 3 = -10 - 3

Simplifying this gives us:

n = -13

Therefore, n = -13.

5. (58 - 24) - 65

We can start by evaluating the expression within the parentheses:

58 - 24 = 34

Now we substitute this value back into the original expression:

34 - 65 = -31

So the value of the expression is -31.

6. (17 - 35) + 40

First, we evaluate the expression within the parentheses:

17 - 35 = -18

Now we substitute this value back into the original expression:

-18 + 40 = 22

So the value of the expression is 22.

7. -70 + (32 + 19)

First, we evaluate the expression within the inner parentheses:

32 + 19 = 51

Now we substitute this value back into the original expression:

-70 + 51 = -19

So the value of the expression is -19.

8. -7 - (-9 - 40)

To simplify this expression, we need to evaluate the inner parentheses first:

-9 - 40 = -49

Now we substitute this value back into the original expression:

-7 - (-49) = -7 + 49

This simplifies to:

-7 + 49 = 42

So the value of the expression is 42.

9. (-6 - 7) - 2

We can start by simplifying within the inner parentheses:

-6 - 7 = -13

Now we substitute this value back into the original expression:

-13 - 2 = -15

So the value of the expression is -15.

10. 8 - (-9 + 5)

To simplify this expression, we need to evaluate the inner parentheses first:

-9 + 5 = -4

Now we substitute this value back into the original expression:

8 - (-4) = 8 + 4

This simplifies to:

8 + 4 = 12

So the value of the expression is 12.

11. -5 - (-7 - 6)

To simplify this expression, we need to evaluate the inner parentheses first:

-7 - 6 = -13

Now we substitute this value back into the original expression:

-5 - (-13) = -5 + 13

This simplifies to:

-5 + 13 = 8

So the value of the expression is 8.

12. (-13 + 50) - 2

We can start by simplifying within the inner parentheses:

-13 + 50 = 37

Now we substitute this value back into the original expression:

37 - 2 = 35

So the value of the expression is 35.