Question

1.-x=2 2.x:(-0,01)=38 3.х-4=-5 4.у+2,8=0,4 5.-3+у=0 6.+2=-8 7.3,6-b=-3,6 8.m-1=-3,8 9.3(х+2)=-12 10.-2(y-1)-5=4

Answer 1

-1/7х=2; х=2×(-7)= -14

х÷(-0,01)=38; х=38×(-0,01)= -0,38

х-4= -5; х= -5+4= -1

у+2,8=0,4; у=0,4-2,8= -2,4

-3+у=0; у=0+3=3

z/3+2= -8; z/3= -8-2; z= -10×3= -30

3,6-b= -3,6; b=3,6+3,6=7,2

m-1 4/5= -3,8; m= -3,8+1,8; m= -2

3(х+2)= -12; х+2= -12÷3; х= -4-2= -6

-2(у-1)-5=4; -2(у-1)=4+5; у-1=9÷(-2); у= -4,5+1= -3,5

Answer 2

To solve these equations, I'll go through each one step-by-step:

1. -x = 2 To solve for x, we need to isolate it on one side of the equation. To do that, we can multiply both sides by -1 to eliminate the negative sign: -1*(-x) = -1*2 x = -2

2. x/(-0.01) = 38 To solve for x, we need to isolate it on one side of the equation. To do that, we can multiply both sides by -0.01: -0.01 * (x / (-0.01)) = -0.01 * 38 x = -0.01 * 38 x = -(-0.38) (negative divided by a negative is positive) x = 0.38

3. x - 4 = -5 To solve for x, we need to isolate it on one side of the equation. To do that, we can add 4 to both sides: x - 4 + 4 = -5 + 4 x = -1

4. y + 2.8 = 0.4 To solve for y, we need to isolate it on one side of the equation. To do that, we can subtract 2.8 from both sides: y + 2.8 - 2.8 = 0.4 - 2.8 y = -2.4

5. -3 + y = 0 To solve for y, we need to isolate it on one side of the equation. To do that, we can add 3 to both sides: -3 + y + 3 = 0 + 3 y = 3

6. No equation is provided for this statement: "+2 = -8". If there was an equation, I could solve it, but as it stands, it doesn't make sense.

7. 3.6 - b = -3.6 To solve for b, we need to isolate it on one side of the equation. To do that, we can add b to both sides: 3.6 - b + b = -3.6 + b 3.6 = -3.6 + b b = 3.6 - 3.6 b = 0

8. m - 1 = -3.8 To solve for m, we need to isolate it on one side of the equation. To do that, we can add 1 to both sides: m - 1 + 1 = -3.8 + 1 m = -2.8

9. 3(x + 2) = -12 To solve for x, we need to isolate it on one side of the equation. To do that, we can divide both sides by 3: 3(x + 2) / 3 = -12 / 3 x + 2 = -4 Now, subtract 2 from both sides to get the value of x: x = -4 - 2 x = -6

10. -2(y - 1) - 5 = 4 To solve for y, we need to isolate it on one side of the equation. To do that, we can start by distributing the -2 on the left side: -2(y - 1) - 5 = 4 -2y + 2 - 5 = 4 -2y - 3 = 4 Next, add 3 to both sides: -2y - 3 + 3 = 4 + 3 -2y = 7 Finally, divide both sides by -2 to find the value of y: y = 7 / -2 y = -3.5

So, the solutions to the given equations are:

1. x = -2
2. x = 0.38
3. x = -1
4. y = -2.4
5. y = 3
6. No equation provided
7. b = 0
8. m = -2.8
9. x = -6
10. y = -3.5