Respuesta:
4 (x+5)-(x-9)=50
4x+20-x+9=50
3x+29=50
3x=50-29
3x=21
x=21:3
x=7
Explicación paso a paso:
7(x-3)=28
7x-21=28
7x=28+21
7x=49
x=49:7
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Verified answer
Respuesta:
4 (x+5)-(x-9)=50
4x+20-x+9=50
3x+29=50
3x=50-29
3x=21
x=21:3
x=7
Explicación paso a paso:
7(x-3)=28
7x-21=28
7x=28+21
7x=49
x=49:7
x=7