Solve for x
x=\frac{20}{29}\approx 0.689655172
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138+69+69+69+69+8.7x=420
Add 69 and 69 to get 138.
207+69+69+69+8.7x=420
Add 138 and 69 to get 207.
276+69+69+8.7x=420
Add 207 and 69 to get 276.
345+69+8.7x=420
Add 276 and 69 to get 345.
414+8.7x=420
Add 345 and 69 to get 414.
8.7x=420-414
Subtract 414 from both sides.
8.7x=6
Subtract 414 from 420 to get 6.
x=\frac{6}{8.7}
Divide both sides by 8.7.
x=\frac{60}{87}
Expand \frac{6}{8.7} by multiplying both numerator and the denominator by 10.
x=\frac{20}{29}
Reduce the fraction \frac{60}{87} to lowest terms by extracting and canceling out 3.
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