Question

A) 2(-X+4)=10 B) 4(X+2)=12 C)-2(X+1)=20 D) 5(-2x-3)=5
E) 4(x+3)=2(X-2)


F)3(2x-4)=4(X+5) G) -10(-x-3)=10

Me ajudem!!!! dou coroa

Answer 1

Resposta:

A) 2(-X+4)=10

$- 2x + 8 = 10 \\ - 2x + 8 - 10 = 0 \\ - 2x - 2 = 0 \\ - 2x = 2 \times ( - 1) \\ 2x = - 2 \div (2) \\ x = - 1$

B) 4(X+2)=12

$4x + 8 = 12 \\ 4x + 8 - 12 = 0 \\ 4x - 4 = 0 \\ 4x = 4 \div (4) \\ x = 1$

C)-2(X+1)=20

$- 2x - 2 = 20 \\ - 2x - 2 - 20 = 0 \\ - 2x - 22 = 0 \\ - 2x = 22 \times ( - 1) \\ 2x = - 22 \div (2) \\ x = - 11$

D) 5(-2x-3)=5

$- 10x - 15 = 5 \\ - 10x - 15 - 5 = 0 \\ - 10x - 20 = 0 \\ - 10x = 20 \times ( - 1) \\ 10x = - 20 \div (10) \\ x = - 2$

E) 4(x+3)=2(X-2)

$4x + 12 = 2x - 4 \\ 4x + 12 - 2x + 4 = 0 \\ 2x + 16 = 0 \\ 2x = - 16 \div (2) \\ x = - 8$

F)3(2x-4)=4(X+5)

$6x - 12 = 4x + 20 \\ 6x - 12 - 4x - 20 = 0 \\ 2x - 32 = 0 \\ 2x = 32 \div (2) \\ x = 16$

G) -10(-x-3)=10

$10x + 30 = 10 \\ 10x + 30 - 10 = 0 \\ 10x + 20 = 0 \\ 10x = - 20 \div (10) \\ x = - 2$