7x+2a=3x+5a
7x-3x = 5a -2a
4x = 3a
x = 3a/4
Answer:
y=1/2x+ 1/2
Step-by-step explanation:
500 tiles
First find the area of the hall=10ft×(10ft×5)=500ft²
Number of tiles required=500ft²÷1ft²=500
divide the divisor and dividend by 10