Question

oi, responde aí por favor​

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 = 3/4

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

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

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

-y = -21

y = 21

d) (x-5)/10 + (1-2x)/5 = (3-x)/4

((x-5)+(2-4x))/10 = (3-x)/4

4(-3x-3) = 10(3-x)

-12x -12 = 30 - 10x

-12x + 10x = 30 + 12

-2x = 42

x = -21