3x=90 ?
2x+10=70 ?
2x+80=3x
x+50=3x+20
Soluções para a tarefa
Respondido por
18
3x =90 2x+80=3x
x=90/3 80=3x-2x
x=30 x=80
2x +10=70 x+50=3x+20
2x=70-10 50-20=3x-x
2x=60 30=2x
x=60/2 x=30/2
x=30 x=15
x=90/3 80=3x-2x
x=30 x=80
2x +10=70 x+50=3x+20
2x=70-10 50-20=3x-x
2x=60 30=2x
x=60/2 x=30/2
x=30 x=15
Christianr:
valeww
Respondido por
9
3x = 90
x = 90/3
x = 30
2x + 10 = 70
2x = 70 - 10
2x = 60
x = 60/2
x = 30
2x + 80 = 3x
80 = 3x - 2x
80 =x
x = 80
x + 50 = 3x + 20
50 - 20 = 3x - x
30 = 2x
2x = 30
x = 30/2
x = 15
x = 90/3
x = 30
2x + 10 = 70
2x = 70 - 10
2x = 60
x = 60/2
x = 30
2x + 80 = 3x
80 = 3x - 2x
80 =x
x = 80
x + 50 = 3x + 20
50 - 20 = 3x - x
30 = 2x
2x = 30
x = 30/2
x = 15
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