Respuesta:
9x+3=5+(2-3x)
9x+3=5+2-3x
9x+3x=5+2-3
12x=4
x=4/12
x=0,33
7x-(7x+3)=4x-8
7x-7x-3=4x-8
7x-7x-4x=-8+3
-4x=-5
x=-5/-4
x=1,25
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Respuesta:
9x+3=5+(2-3x)
9x+3=5+2-3x
9x+3x=5+2-3
12x=4
x=4/12
x=0,33
7x-(7x+3)=4x-8
7x-7x-3=4x-8
7x-7x-4x=-8+3
-4x=-5
x=-5/-4
x=1,25