Question

Resolva as esquaçoes
a)6y=72
b)9+3y=33
c)6+2x=13+x
d)5x+8=2x-40
e)y/3=12
f)3y-10=y+20
g)5a-7=53+2a

Answer 1

a)
6y=72
y=72/6
y= 12
b)
9+3y= 33
3y= 33-9
3y= 24
y= 24÷3
y= 8

c)
6+2x= 13+x
2x-x= 13-6
x= 7

d)
5x+8 = 2x-40
5x-2x= -40-8
3x= -48
x= -48/3
x= -16

e)
y/3 =12
y= 3×12
y= 36

f)
3y-10 = y+20
3y-y = 20+10
2y= 30
y= 30/2
y= 15

g)
5a-7= 53+2a
5a-2a = 53+7
3a= 60
a= 60/3
a= 20

Espero ter ajudado! !
Abraço!