-5/7 × ( - 28/15)
997621
953356
265809
681235
5413876
5796042
6m=4m-10
cos 63 as a fraction
(x+1)^2-(x-1)^2 = 4x simplified
x²-y²=0
9x+4=7-4x
3× + 5 = × + 12
x(x+3)-(x+1)(x+3) = -(x+3) factorized
