-3(1-3n)=-7n+8(2n-9)

Solution for -3(1-3n)=-7n+8(2n-9) equation:

-3(1-3n)=-7n+8(2n-9)

We simplify the equation to the form, which is simple to understand 
-3(1-3n)=-7n+8(2n-9)

Reorder the terms in parentheses
+(-3+9n)=-7n+8*(2n-9)

Remove unnecessary parentheses
-3+9n=-7n+8+*(+2n-9+)

Reorder the terms in parentheses
-3+9n=-7n+(+16n-72)

Remove unnecessary parentheses
-3+9n=-7n+16n-72

We move all terms containing n to the left and all other terms to the right. 
+9n+7n-16n=-72+3

We simplify left and right side of the equation. 
n=-69

0=-69

The left and right sides are not equal, therefore there is no solution. This equation is invalid.