6-(2x-1)=3x+5
4x=7y-9x
find x in
x+5=2x-1
(5x-4)(10x-13)=52
(3w-7)^2
expand and simplify
x^2-5x=0 factorise
f(x)= $\frac{7/3x-1}{2/3x+1}$
find the equation of the tangent line to the curve y=x^2-2x+7 at the point where it cuts the y axis
