Question

3a + 4a + 9 + 5 4a-1=9

Answer 1

Answer:

$\displaystyle 31\frac{1}{2}$

Step-by-step explanation:

9 = −1 + 4a

+ 1 + 1

_________

$\displaystyle \frac{10}{4} = \frac{4a}{4} \\ \\ 2\frac{1}{2} = a \\ \\ \\ 3[2\frac{1}{2}] + 4[2\frac{1}{2}] + 9 + 5 = 7\frac{1}{2} + 10 + 9 + 5 = 31\frac{1}{2}$

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