find the base
50% of __ is 3
x^2-xy+b^2=3
x+2y+1=0
20+10/36*5
2by5+2by15
864÷12
n:10=49:70
20÷4+6-3+5+2
3(-2/5)² - 6(-2/5) / -7(-2/5)³ + 5(-2/5)²3(-2/5)² - 6(-2/5) / -7(-2/5)³ + 5(-2/5)²
9:7=81:n
