ha gente me socorre nessa
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2x+4=10
= 2x=10.4
= 2x=6
= x=6:2
= x=3
5k-12=18
= 5k=18+12
= 5k=30
= 5k=30
= k=20:5
= k=6
2y-y+15=22
= y+15=22
= y=22-15
= y=7
9h-2?19+2h
= 9h-2h=19+2
= 7h=19+2
=7h=21
=h=21:7
= h=3
= 2x=10.4
= 2x=6
= x=6:2
= x=3
5k-12=18
= 5k=18+12
= 5k=30
= 5k=30
= k=20:5
= k=6
2y-y+15=22
= y+15=22
= y=22-15
= y=7
9h-2?19+2h
= 9h-2h=19+2
= 7h=19+2
=7h=21
=h=21:7
= h=3
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