Question

resolva as questões a seguir
a)18x-43 = 65
b) 23x - 16 = 14 - 17x
c) 10 y - 5 (1 + y) = 3 (2 y -2) - 20
d) x (x + 4) + x (x + 2) =2x²+12
e) (x -5)/10+(1-2x)/5=(3-x)/4​

Answer 1

Explicação passo-a-passo:

a) 18X - 43 = 65

18x = 65 + 43

18x = 108

X = 108/18

x = 6

b) 23x - 16 = 14 - 17x

23 x + 17 x = 16 + 14

40x = 30

X = 30/40

x= 3/4

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

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

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

- y= - 21 (-1)

y= 21

d) x (x + 4) + x (x +2) = 2x^2 + 12

x^2+4x + x^2 + 2x = 2x^2 +12

x^2 + 14x + x^2 + 2x - 2x^2=12

2x^2 + 6x - 2x^2=12

6x = 12

X = 12/6

x = 2