Question

a) 9X+6=4X
b) 4X-12=X
c) 5X+21=10X-19
d) 11X+17=10X+13
ME AJUDEM POR FAVOR ​

Answer 1

Explicação passo-a-passo:

a) 9x+6=4x

9x - 4x = - 6

5x = - 6

x = - 6/5 ou x = - 1,2

b) 4x-12=x

4x - x = 12

3x = 12

x = 12/3

x = 4

c) 5x+21=10x-19

5x-10x = - 19 - 21

-5x = - 40(-1)

5x = 40

x = 40/5

x = 8

d) 11x+17=10x+13

11x - 10x = 13 - 17

x = - 4