Question

Resolva as equações.
a) 4(14 + 10x) = 18x-8

b)3y -21,6= 54- 4,2(18+ 3y)

Answer 1

a) 4(14+10x)=18x-8

56+40x=18x-8

40-18x=-8-56

22x=-64

x=-64/22

x=-32/11

b) 3y-21,6=54-4,2(18+3y)

3y-21,6=54-75,6+12,6y

3y-12,6y=21,6+54-75,6

-9,6y=151,2

y=-151,2/9,6

y=-15,75