Solve for x
x=7
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3.3x-2.1x=8.4
Subtract 2.1x from both sides.
1.2x=8.4
Combine 3.3x and -2.1x to get 1.2x.
x=\frac{8.4}{1.2}
Divide both sides by 1.2.
x=\frac{84}{12}
Expand \frac{8.4}{1.2} by multiplying both numerator and the denominator by 10.
x=7
Divide 84 by 12 to get 7.
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