AB would equal 3.57 or 3.6 rounded as your directions ask because the sides are supposed to be proportional. When you do 21/5, you get 4.2. Then, you can just do 15/4.2 and get 3.57.
I don’t know if you’ve ever heard of the amazing device known as a calculator but the answer is 1,188
Answer:
75%
Step-by-step explanation:
3(x+5)=7-x3x+15=7-x4x=-8x=-2
