180-22=
80-2.4 =
8×3³+63÷9-6
5×4+(12+2)-30÷3
(2p+5q)(7-r+5s)
word problem on perimeter
x+y less than 5
x-y=2a, ax+by=$a^{2}$+ $b^{2}$ then
find the value of x and y
3ab-5b+3ac+4by
integral(z-z^2 )where cisahalfcircisahalfcircle|z -2|=3
3r^2-4r-6 / 5r^2-16r+3
