find area of circle if its radius is 7.90
{3x - 4y = 2
5x + 2y = 40
3^18 + 3^18 + 3^18
y=ax-b
$\frac{8r+2}{5}$ = $\frac{2}{r}$
how 7 + 3/8 will be converted to mixed number?
$m^{2}$ =4(2m+5)
-2(14-12x)=-4(10-6x)
$\frac{11y-1}{5}$ = $y^{2}$ +1
$\sqrt{\x}$ = -2
