Resposta:
a) 4x-1-x=17
3x=17+1
3x=18
x=18/3
x=6
b) 2x+7=17
2x=17-7
2x=10
x=10/2
x=5
c) 2y+2=10
2y=10-2
2y=8
y=8/2
y=4
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Resposta:
a) 4x-1-x=17
3x=17+1
3x=18
x=18/3
x=6
b) 2x+7=17
2x=17-7
2x=10
x=10/2
x=5
c) 2y+2=10
2y=10-2
2y=8
y=8/2
y=4