-7x+5(2x-3)=6
-7x+10x-15=6
3x=21
x=7
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5x-7(3-x)=2x+11
5x-21+7x=2x+11
5x+7x-2x=11+21
10x=32
x=3.2
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2(x+5)-3(x-2)=10
2x+10-3x+6=10
-x=-6
x=6
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2(5-x)-5(2x-3)=1
10-2x-10x+15=1
-12x=-24
x=2
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(x-2)(x-3)=x(x+1)
x²-2x-3x+6=x²+x
6x=6
x=1
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(x+4)(x+6)-x²=30
x²+4x+6x+24-x²=30
10x=6
x=0.6