X+Y=7.2; -X+Y=4.8
X+Y=10; X-Y=8
2a+15c+5b
the sum of three numbers in AP is 15. When 1,1,4 are added to number respectively, the result is in GP.find numbers
10X+3Y=75; 6X-5Y=11
39=5a+15b
146=15a+55b
2x+3x+9=0
3x^2 -2 +5 divided by (x-2)
-8X-4Y=-64; 6X+2Y=33
a+b=a
b+c=7
c=?
