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a^{2}-1.8
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a^{2}-1.8
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a^{2}-0.6+\frac{3}{4}\left(-\frac{5+3}{5}\right)
Multiply 1 and 5 to get 5.
a^{2}-0.6+\frac{3}{4}\left(-\frac{8}{5}\right)
Add 5 and 3 to get 8.
a^{2}-0.6-\frac{6}{5}
Multiply \frac{3}{4} and -\frac{8}{5} to get -\frac{6}{5}.
a^{2}-\frac{9}{5}
Subtract \frac{6}{5} from -0.6 to get -\frac{9}{5}.
a^{2}-0.6+\frac{3}{4}\left(-\frac{5+3}{5}\right)
Multiply 1 and 5 to get 5.
a^{2}-0.6+\frac{3}{4}\left(-\frac{8}{5}\right)
Add 5 and 3 to get 8.
a^{2}-0.6-\frac{6}{5}
Multiply \frac{3}{4} and -\frac{8}{5} to get -\frac{6}{5}.
a^{2}-\frac{9}{5}
Subtract \frac{6}{5} from -0.6 to get -\frac{9}{5}.
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