Practice problem
Simplify the expression 45x+23x−16x+745x+23x-16x+745x+23x−16x+7.
52x+752x +752x+7
91x+791x+791x+7
115965x+7115965x+7115965x+7
45x45x45x
Type a concept, like “slope” or “photosynthesis”.