Question

9a-ab+5b
if a=2 and b=7​

Answer 1

39

Explanation:

9a-ab+5b

a=2 and b=7

we substitute the variables with their real numbers

9(2)-(2 x 7)+5(7)

from here we just simplify the equation

18-14+35=39

Answer 2

39

Explanation:

9a=18 ab=14 5b=35

18-14+35=39