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314x\left(20^{2}+12^{2}+20\times 12\right)=369264
Multiply both sides of the equation by 3.
314x\left(400+12^{2}+20\times 12\right)=369264
Calculate 20 to the power of 2 and get 400.
314x\left(400+144+20\times 12\right)=369264
Calculate 12 to the power of 2 and get 144.
314x\left(544+20\times 12\right)=369264
Add 400 and 144 to get 544.
314x\left(544+240\right)=369264
Multiply 20 and 12 to get 240.
314x\times 784=369264
Add 544 and 240 to get 784.
246176x=369264
Multiply 314 and 784 to get 246176.
x=\frac{369264}{246176}
Divide both sides by 246176.
x=\frac{3}{2}
Reduce the fraction \frac{369264}{246176} to lowest terms by extracting and canceling out 123088.