Question

Resolva as equações a seguir:
A) 18x-43=85
B)23x-16=14-17x
C) 10y-5(1+y)=3(2y-2)-20

Answer 1

✔OLÁ!!!

A) 18X - 43 = 85

18X = 85 + 43

18X = 128

X = 128/18 ÷ 2

X = 64/9

B) 23X - 16 = 14 - 17X

23X + 17X = 14 + 16

40X = 30

X = 30/40 ÷ 10

X = 3/4

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

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

5y - 5 = 6y - 26

5y - 6y = - 26 + 5

- y = - 21 (- 1)

y = 21