Question

Resolva as equações: a) y+18=21
b) 2x -25=47
c) -y +29 =31
d) 6x +24 = 4x -30
e) 10x +15 =5x - 35
f) -2x -15 =27

Answer 1

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Answer 2

A)y+18=21
y=21-18
y=3

B)2x-25=47
2x=47+25
2x=72
x=36

C)-y+29=31
-y=31-29
-y=2
y=-2

D)6x+24=4x-30
6x-4x=-30-24
2x=-54
x=-27

E)10x +15 =5x - 35 
10x-5x=-35-15
5x=50
x=10

F)-2x -15 =27
-2x=27-15
-2x=12
-x=6
x=6