Solve for a
a = \frac{36}{7} = 5\frac{1}{7} \approx 5.142857143
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7a=4\times 9
Variable a cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 4a, the least common multiple of 4,a.
7a=36
Multiply 4 and 9 to get 36.
a=\frac{36}{7}
Divide both sides by 7.
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