how do i solve -5(5n-7)+2(-6+8n)=23

Question

how do i solve equation above

Answer 1

how do i solve -5(5n-7)+2(-6+8n)=23

Expand the brackets, rearrange, simplify and solve.

-5(5n-7)+2(-6+8n)=23

-25n + 35 - 12 + 16n = 23

-25n + 16n + 35 - 12 = 23

-9n + 23 = 23

-9n = 0

n = 0

If you put n = 0 in the original equation, you will see that lhs = rhs.