Question

B 4) 144 : (x-3)=36; 5) 21. (7-8)=84; 6) (x+67) : 18=4. д ​

Answer 1

Ответ:

Пошаговое объяснение:

4) 144 : (x-3)=36;

(х-3)*36=144

х-3=144:36

х-3=4

х=4+3

х=7

__________

144 : (7-3)=36

36=36

5) 21* (у-8)=84;

у-8=84:21

у-8=4

у=4+8

у=12

_______________

21* (12-8)=84

84=84

6) (x+67) : 18=4.

х+67=4*18

х+67=72

х=72-67

х=5

__________________

(5+67) : 18=4

4=4

Answer 2

Пошаговое объяснение:

:

В

4)

144:(х-3)=36

36(х-3)=144

36х-108=144

36х=144+108

36х=252

Х=7

6)

(х+67) :18=4

х+67=4×18

Х+67=72

Х=72-67

Х=5

Answer 3

It seems like you've provided a series of equations, and you want to solve for the unknown variables. Let's go through each equation one by one:

4. 144 : (x - 3) = 36

To solve for x, you can first multiply both sides by (x - 3) to isolate the variable:

144 = 36 * (x - 3)

Now, divide both sides by 36:

144/36 = (x - 3)

4 = (x - 3)

Now, add 3 to both sides to solve for x:

4 + 3 = x

x = 7

So, in equation 4, x = 7.

5. 21 * (7 - 8) = 84

In this equation, the expression in the parentheses evaluates to -1, so the equation becomes:

21 * (-1) = 84

Now, simplify the left side:

-21 = 84

This equation is not valid. There is no value of -1 that can make this equation true.

6. (x + 67) : 18 = 4

To solve for x, multiply both sides by 18:

x + 67 = 4 * 18

x + 67 = 72

Now, subtract 67 from both sides:

x + 67 - 67 = 72 - 67

x = 5

So, in equation 6, x = 5.

Answer 4

Let's solve each of these equations one by one:

4. 144 : (x - 3) = 36

To solve for x, you can start by multiplying both sides of the equation by (x - 3):

144 = 36(x - 3)

Now, divide both sides of the equation by 36:

144/36 = (x - 3)

4 = x - 3

Add 3 to both sides of the equation to isolate x:

x = 4 + 3 x = 7

So, the solution is x = 7.

5. 21 * (7 - 8) = 84

In this equation, you have 21 multiplied by (7 - 8), which is equal to -21:

21 * (-1) = 84

-21 = 84

This equation is not possible. There is no value of -21 that can be equal to 84. So, there is no solution for this equation.

6. (x + 67) : 18 = 4

To solve for x, you can start by multiplying both sides of the equation by 18:

(x + 67) = 4 * 18

(x + 67) = 72

Now, subtract 67 from both sides of the equation to isolate x:

x = 72 - 67 x = 5

So, the solution is x = 5.