Question

-5x-2+8 и - 2m-7+7m=3

Answer 1

–5х–2+8 = –5х+6 (отдельно складываются числа с иксами и отдельно — без иксов)

–2m–7+7m = 3

5m–7 = 3

5m = 3+7

5m = 10

m = 10:2

m = 5

Ответ: m = 5

Answer 2

Let's solve the given equations step by step:

1. Equation 1: -5x - 2 + 8

Combine the constants: -5x + (8 - 2)

Simplify: -5x + 6

2. Equation 2: -2m - 7 + 7m = 3

Combine the m-terms: (-2m + 7m) - 7 = 3

Combine the m-terms: 5m - 7 = 3

Now, let's isolate the variable m:

Add 7 to both sides to move the constant term to the right side of the equation: 5m - 7 + 7 = 3 + 7

Simplify: 5m = 10

Finally, divide both sides by 5 to find the value of m: m = 10 / 5 m = 2

So the solutions to the equations are:

1. -5x + 6
2. m = 2