Question

1)4×-7=8×-2? 2)2×+1=4×-7? 3)9×+9+3×=15? com o calculo pfvr​

Answer 1

01)

4X - 7 = 8X - 2

4X - 8X = - 2 + 7

- 4X = 5

X = -5/4

02)

2X + 1 = 4X - 7

2X - 4X = - 7 - 1

- 2X = - 8

X = 4

03)

9X + 9 + 3X = 15

12X = 15 - 9

X = 6/12

X = 1/2