Step-by-step explanation:
start by adding together the numbers in the right hand column
60x+90y=2100
29t=2100
She would need 18 cameras
Answer:
x=40
7(2x-5)-11=3(5x-2)-2x Distribute
14x-35-11=15x-6-2x Simplify
14x-46=13x-6 subtract 13x and add 46