13x-5y=140
(-20)x+19y=-44
25 of 3/5 ÷ 5/3 + 3 of 1/3 ÷ 10
(3-7)^2 + (-4-10)^2
30=(20/100)(x)
X^2-X-24
5.5*12
45=(x/100)(60)
p(x)=xy^2+ 43x2y− 74x2y− 35xy^2+ 35 and q(x)=x^2y+xy^2.
45=x/100(60)
x2+2x+1=0
