Question

If 3x ay=7, find the value of a (given,x=3,y=4)

Answer 1

Answer:

$3(3) - a \times 4 = 7 \\ 9 - 4a = 7 \\ - 4a = 7 - 9 \\ - 4a = - 2 \\ 4a = 2 \\ a = 2 \div 4 \\ a = 1 |2$