Question

$what \: should \: be \: the \: value \: of \: a\\ \left. \begin{array} { l } { if \: 5 x + 2 a - 3 = 9 x \: for \: x \: = - 5 } \end{array} \right.$
please tell me it's answer​

Answer 1

Answer:

5(-5)+2a-3=9(-5)

-25+2a-3=-45-

-28+2a=-45

2a=-45+28

2a=-17

a=17/2

a=8.5