Question

a) 2x+7=x-18-6. b) 3x+17=2x+3 (2-6). c) ×/2=6-8+14 d) 3 elevado a 2=81 e) 6x-3x=8x-25

Answer 1

A) 2x+7 = x-18-6

2x-x= -18-6-7

x = -31

B) 3x+17 = 2x-3

3x-2x = -3-17

x = -20

C) $\frac{x}{2}$ = 6-8+14

$\frac{x}{2}$ = 12

x = 12×2

x = 24

D)($3^{2}$)x = 81

9x = 81

x = 9

E) 6x-3x=8x-25

6x-3x-8x = -25

-5x = -25

x = 5