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168+14\sqrt{11}=10-x\times 12\times 5
Use the distributive property to multiply 14 by 12+\sqrt{11}.
168+14\sqrt{11}=10-x\times 60
Multiply 12 and 5 to get 60.
10-x\times 60=168+14\sqrt{11}
Swap sides so that all variable terms are on the left hand side.
10-60x=168+14\sqrt{11}
Multiply -1 and 60 to get -60.
-60x=168+14\sqrt{11}-10
Subtract 10 from both sides.
-60x=158+14\sqrt{11}
Subtract 10 from 168 to get 158.
-60x=14\sqrt{11}+158
The equation is in standard form.
\frac{-60x}{-60}=\frac{14\sqrt{11}+158}{-60}
Divide both sides by -60.
x=\frac{14\sqrt{11}+158}{-60}
Dividing by -60 undoes the multiplication by -60.
x=\frac{-7\sqrt{11}-79}{30}
Divide 158+14\sqrt{11} by -60.