Solve for x
x=150
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6x+800-2x=1400
Use the distributive property to multiply 2 by 400-x.
4x+800=1400
Combine 6x and -2x to get 4x.
4x=1400-800
Subtract 800 from both sides.
4x=600
Subtract 800 from 1400 to get 600.
x=\frac{600}{4}
Divide both sides by 4.
x=150
Divide 600 by 4 to get 150.
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