Solving by Combining Like Terms
10(x+3)-(-9x-4)=x-5+3
x=-2
-4k+2(5k-6)=-3k-39
k = -3
Ms. Dougherty bought 7 Hannah Montana t-shirts for a total of $90.93. Each t-shirt cost the same amount. How many Hannah Montana t-shirts did Ms. Dougherty buy?
n - # of t-shirts 7n = 90.93 n = 12.99 Each t-shirt cost $12.99