Question

Resolva as equacoes a seguir:​

Answer 1

Resposta:

a)  x = -5

b) x = - $\frac{26}{43}$

c) x = - 3

d) x = $\frac{40}{37}$

Explicação passo a passo:

a) 3(4x - 5) = 5(2x - 5)

12x - 15 = 10x - 25

12x - 10x = -25 + 15

2x = - 10

x = $\frac{- 10}{2}$

x = - 5

b) 8(6x + 2) = 5(x- 2)

48x + 16 = 5x - 10

48x - 5x = - 10 - 16

43x = - 26

x = - $\frac{26}{43}$

c) 7(5 - x) = - 4(x - 11)

35 - 7x = -4x + 44

- 7x + 4x = 44 - 35

- 3x = 9

x = - $\frac{9}{3}$

x = -3

d) 7(4 - 3x) = 2(8x - 9) + 6

28 - 21x = 16x - 18 + 6

28 - 21x = 16x - 12

- 21x - 16x = - 12 - 28

- 37x = - 40

x = $\frac{40}{37}$

espero ter ajudado <3