Question

3) Resolva as equações
a) y + 9 = 3
d) 3x = - 12
b) x - 12 = 15
e) 3x = 10
c) y + 5 = -4
f) 5x = 90​

Answer 1

Resposta:

a)y+9=3

y=3-9

y=-6

b)x-12=15

x=15+12

x=27

c)y+5=-4

y=-4-5

y=-9

d)3x=-12

x=-12-3

x=-15

e)3x=10

x=10-3

x=7

f)5x=90

x=90-5

x=85