Solve for x
x=1.5
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2.1x-6.45+4.3x=3.15
Add 4.3x to both sides.
6.4x-6.45=3.15
Combine 2.1x and 4.3x to get 6.4x.
6.4x=3.15+6.45
Add 6.45 to both sides.
6.4x=9.6
Add 3.15 and 6.45 to get 9.6.
x=\frac{9.6}{6.4}
Divide both sides by 6.4.
x=\frac{96}{64}
Expand \frac{9.6}{6.4} by multiplying both numerator and the denominator by 10.
x=\frac{3}{2}
Reduce the fraction \frac{96}{64} to lowest terms by extracting and canceling out 32.
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