Question

7.(6-2a)=98
$7.(6 - 2a) = 98$

Answer 1

$7(6 - 2a) = 98 \\ 6 - 2a = \frac{98}{7} \\ 6 - 2a = 14 \\ - 2a = 14 - 6 \\ - 2a = 8 \\ a = \frac{8}{ - 2} \\ a = - 4$

Answer 2

Reginaldo,

7(6-2a) = 98

42 - 14a = 98

-14a = 98 - 42

-14a = 56

a = 56/-14

a = -4