Question

Resolva as equações a seguir:

a) 18x – 43 = 65

b) 23x – 16 = 14 – 17x

c) 10y – 5(1 + y) = 3(2y - 2) – 20

d) x(x+4) + x(x + 2) = 2x² + 12

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Answer 1

Resposta:

a) x=6

b) 3/4

c) y=21

d)

Explicação passo-a-passo:

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=3/4

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

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

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

10y-11y = -21

-y =-21 (-1)

y= 21