Respuesta
1)15-5x= 20
5x=20+15
5x=35
x=35/5
x=7
2)2x+2=19-1
2x+2=18
2x=18-2
x=16/2
x=8
3)x+3=(10+x)3-7
x+3=30+3x-7
x-3x=30-7-3
-2x=20
x=20/-2
x=-10
Explicación paso a paso:
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Verified answer
Respuesta
1)15-5x= 20
5x=20+15
5x=35
x=35/5
x=7
2)2x+2=19-1
2x+2=18
2x=18-2
x=16/2
x=8
3)x+3=(10+x)3-7
x+3=30+3x-7
x-3x=30-7-3
-2x=20
x=20/-2
x=-10
Explicación paso a paso: