Question

rsolva essas equaçoes pfv A- 18x - 43 = 65 B- 23x - 16 = 14 - 17x C- 10y - 5 (1 + y ) = 3 (2y - 2 ) = 20

Answer 1

A- 18x - 43 = 65

18x = 65 + 43

18x = 108

x = 108 ÷ 18

x = 6

B- 23x - 16 = 14 - 17x

23x + 17x = 14 + 16

40x = 30

x = 30 ÷ 40

x = 0,75

C- 10y - 5 (1 + y ) = 3 (2y - 2 ) = 20

10y - 5 + 5y = 6y - 6 = 20

15y - 6y = - 6 + 5 = 20

9y = 20 + 1

y = 21 ÷ 9

y = 2,333...

Espero ter ajudado