6x+4(2x-1)+3x4(45-3x4)=171

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6x+4(2x-1)+3x4(45-3x4)=1716x+4(2x-1)+3x4(45-3x4)=1716x+4(2x-1)+3x4(45-3x4)=1716x+8x-4+12*33=17114x-4

6x+4(2x-1)+3x4(45-3x4)=171
6x+4(2x-1)+3x4(45-3x4)=171

6x+4(2x-1)+3x4(45-3x4)=171
6x+8x-4+12*33=171
14x-4+396=171
14x+392=171
14x=-221
x=-221/14