Below is how many times each of the eight cows on Frannie's Farm mooed yesterday.
5x-7y=-80
2x+11y=106
π\piπ
a:b=3. :2
15- 4x=2(3x+1)
\frac{r}{2q}\times \frac{3r}{5q}\times 30r
The houses of A row are numbered consecutively from 1 to 49.Show that there is a value of x such that the sum of the numbers of th...
\frac{3w}{4z}\div 15w^4
\frac{15tu^3}{10vw^2}\div \frac{15t^2u}{10w^2y^2}
3x+5y=31
2x+3y=20
