20-12a+ $a^{2}$ =0
6x+10=3-x
make x the subject of a=x-b
92.9 divided by 669
solve the simultaneous equations
x-6y=10
3y^2=4x+7
Make x the subject of v=x-w
x+2y=2
2x+2y=5
17-2x=4x+5
5$f^{2}$ =4(8f-3)
(√3/4) * side²