3 4x-1+5 3x+2 等于7 2x-1 +1

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34x-1+53x+2等于72x-1+134x-1+53x+2等于72x-1+134x-1+53x+2等于72x-1+13(4x-1)+5(3x+2)=7(2x-1)+112x-3+15x+10=14

3 4x-1+5 3x+2 等于7 2x-1 +1
3 4x-1+5 3x+2 等于7 2x-1 +1

3 4x-1+5 3x+2 等于7 2x-1 +1
3(4x-1)+5(3x+2)=7(2x-1)+1
12x-3+15x+10=14x-7+1
12x+15x-14x=3-10-7+1
13x=-13
x=-1

x=-1
so easy!!

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