Solve for B
B = -\frac{21}{4} = -5\frac{1}{4} = -5.25
Assign B
B≔-\frac{21}{4}
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B=-\frac{12}{4}-\frac{9}{4}
Convert -3 to fraction -\frac{12}{4}.
B=\frac{-12-9}{4}
Since -\frac{12}{4} and \frac{9}{4} have the same denominator, subtract them by subtracting their numerators.
B=-\frac{21}{4}
Subtract 9 from -12 to get -21.
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