Solve for x
x = \frac{3450}{11} = 313\frac{7}{11} \approx 313.636363636
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0.4x=315-0.7x+30
Use the distributive property to multiply 450-x by 0.7.
0.4x=345-0.7x
Add 315 and 30 to get 345.
0.4x+0.7x=345
Add 0.7x to both sides.
1.1x=345
Combine 0.4x and 0.7x to get 1.1x.
x=\frac{345}{1.1}
Divide both sides by 1.1.
x=\frac{3450}{11}
Expand \frac{345}{1.1} by multiplying both numerator and the denominator by 10.
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