Respostas
respondido por:
1
2x-40=60
2x = 60 + 40
2x = 80
x= 80/2
x= 40,,
x/2+20=60
x+20=60.2
x=60.2-20
x=120-20
x=100
2x = 60 + 40
2x = 80
x= 80/2
x= 40,,
x/2+20=60
x+20=60.2
x=60.2-20
x=120-20
x=100
respondido por:
1
A)
2x - 40 = 60
2x= 60 + 40
2x = 100
x = 100/2
x = 50
********************************************
B)
x/2 + 20 = 60
x + 20 = 60
-----
2
x + 2.20 = 2.60
----------- --------
2 2
x + 40 = 120
x = 120 - 40
X = 80
2x - 40 = 60
2x= 60 + 40
2x = 100
x = 100/2
x = 50
********************************************
B)
x/2 + 20 = 60
x + 20 = 60
-----
2
x + 2.20 = 2.60
----------- --------
2 2
x + 40 = 120
x = 120 - 40
X = 80
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