Question

como posso resolver estes cálculos

8x +3 = 5x -2 -2x

12 + 4x = 3 + 7x -9

15 + 3 (x + 2) = -7 + 2 (x + 1)

Answer 1

Explicação passo-a-passo:

8x +3 = 5x -2 -2x

8x+2x-5x= -3-2

5×=-5

×=-5/5

×= -1

12 + 4x = 3 + 7x -9

4x - 7x= 3 -9 -12

-3× = 3 -21

-3× = -18 (-1)

×= 18/3

×= 6

15 + 3 (x + 2) = -7 + 2 (x + 1)

15 + 3x + 6 = -7 + 2× + 2

3× -2× = -7-15-6+2

x= -28 + 2

×= -26