Solve for x
x = \frac{9}{7} = 1\frac{2}{7} \approx 1.285714286
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0.4x+1.6+0.3x=2.5
Add 0.3x to both sides.
0.7x+1.6=2.5
Combine 0.4x and 0.3x to get 0.7x.
0.7x=2.5-1.6
Subtract 1.6 from both sides.
0.7x=0.9
Subtract 1.6 from 2.5 to get 0.9.
x=\frac{0.9}{0.7}
Divide both sides by 0.7.
x=\frac{9}{7}
Expand \frac{0.9}{0.7} by multiplying both numerator and the denominator by 10.
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