Question

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

Answer 1

`\displaystyle 31(1)/(2)`

Explanation:

9 = −1 + 4a

+ 1 + 1

_________

`\displaystyle (10)/(4) = (4a)/(4) \\ \\ 2(1)/(2) = a \\ \\ \\ 3[2(1)/(2)] + 4[2(1)/(2)] + 9 + 5 = 7(1)/(2) + 10 + 9 + 5 = 31(1)/(2)`

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