Solve for x
x=790
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3x-5600+7x=2300
Use the distributive property to multiply -7 by 800-x.
10x-5600=2300
Combine 3x and 7x to get 10x.
10x=2300+5600
Add 5600 to both sides.
10x=7900
Add 2300 and 5600 to get 7900.
x=\frac{7900}{10}
Divide both sides by 10.
x=790
Divide 7900 by 10 to get 790.
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