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x-(5-3x)=7x+4?

algebra

2007-05-01 13:32:13 · 2 answers · asked by ur baby 1 in Science & Mathematics ➔ Mathematics

2 answers

x-(5-3x)=7x+4
x-5+3x=7x+4
4x-5=7x+4
-3x-5=4
-3x=9
x=-3

Check:
-3-(5-3(-3))=7(-3)+4
-3-(5+9)=-21+4
-3-14=-21+4
-17=-17

2007-05-01 13:38:47 · answer #1 · answered by Anonymous · 4⤊ 0⤋

x-5+3x=7x+4
4x-5=7x+4
4x-4x-5=7x+4-4x
-5=3x+4
-5-4=3x
-9=3x
-3=x

2007-05-01 13:40:38 · answer #2 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋

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