Solve for x
x=0.72
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2.5x=0.7+1.1
Add 1.1 to both sides.
2.5x=1.8
Add 0.7 and 1.1 to get 1.8.
x=\frac{1.8}{2.5}
Divide both sides by 2.5.
x=\frac{18}{25}
Expand \frac{1.8}{2.5} by multiplying both numerator and the denominator by 10.
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