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**need help with algebra, please help me, i beg you**

hey guys

I have a exam on monday on maths and i am having trouble with quadradic equations.

the 2 questions i am having trouble with are as follows:

L/2 = x +60 how do i turn this into a quadradic equation??

i know the formula for quadradic equations but i can't put 2 and 2 together and i would greatly appreciated if someone could just show me how to do it.

also another question is

-33.34 + L = 0.8334 x L

how do i find out what L is?