Question

Preciso de ajuda com essas equações!

a) 3 (5+3y) +5 (-y -1) = 22

b) 2 (9y -4) -7 + (6 - 5y) . 3 = 18

c) 7y + 5 - y + 8 = 31

d) 5 (3 - 2y) = 55

e) 6 (4y + 2) +7 (- 5y + 3) = 66

Answer 1

Resposta:

a) 15+9y-5y-5=22

9y-5y=22-15+5

4y=12

y=3

b)18y-8-7+18-15y=18

18y-15y=18-18+8+7

3y=15

y=5

c)7y-y=31-8-5

6y=18

y=3

d)15-10y=55

-10y=40

y=-4

e)24y+12-35y+21=66

24y-35y=66-12-21

-11y=33

y=-3