SOLUTION: evaluate please: 8x+7 if x=-3 simplify please: -6(2x-9)-4x+5

Algebra ->  Exponents -> SOLUTION: evaluate please: 8x+7 if x=-3 simplify please: -6(2x-9)-4x+5      Log On


   

Question 51625: evaluate please: 8x+7 if x=-3
simplify please: -6(2x-9)-4x+5
Answer by rchill(405) About Me  (Show Source):
You can put this solution on YOUR website!
For the first equation, substitute -3 for x: 8%2A%28-3%29%2B7, which yields -24%2B7, which simplifies to -17. For the second equation, we'll use expansion and order of operations: -6%2A2x-%28-6%29%2A9-4x%2B5, which simplifies to -12x%2B54-4x%2B5. Combining like terms we get -16x%2B59.