a ver esto está fácil
2x+3=7
2x+3-(7)=0
2x-4-0
2x=4
x=4÷2
x=2
3y-8=7
3y-8-(7)=0
3y-15-0
3y=15
y=15÷3
y=5
2x=64
2x-(64)=0
x=64÷2
x=32
y+3=23
y+3-(23)=0
y-20=0
y=20
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hola de nuevo
a ver esto está fácil
2x+3=7
2x+3-(7)=0
2x-4-0
2x=4
x=4÷2
x=2
3y-8=7
3y-8-(7)=0
3y-15-0
3y=15
y=15÷3
y=5
d)
2x=64
2x-(64)=0
2x=64
x=64÷2
x=32
y+3=23
y+3-(23)=0
y-20=0
y=20