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1/2x+3/2=3+7/10x-3x+11/2 /*2
x-3=6+7/5x-6x+11 /*5
5x-15=30+7x-30x+55
5x-7x+30x=55+30+15
28x=100 /28
x=100/28
x=3i8/13
3-4(x+3)+7x=5+3x
3-4x-12+7x=5+3x
-4x+7x-3x=5-3+12
0=14 > równanie sprzeczne
7x-(4x-10)=3x+12
7x-4x-10=3x+12
7x-4x-3x=12+10
0=22 > równanie sprzeczne
8-(4x+12)=8x-(3x-2)
8-4x+12=8x-3x+2
-4x-8x+3x=2-12
-9x=-10 /(-9)
x= 10/9
x= 1i1/9