Question

a) - 21
b) 31
c) 21
d) 20

Answer 1

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

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

5y - 6y = 5 - 26

( -1 ) - y = - 21 ( -1 )

y = 21

Letra c) 21