exam
Maths Puzzle
Numerical Ability
Simplify the rational expression
12x-12/3 (divide) 4x-4/21
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exam Other Question
how do you find where two lines cross with out graphing them; for example: y = 2x + 4 and y = .5x - 2. I tried setting the equations the same and solving, but it did not turn out the same as when i graphed them.
Solve the system by graphing and then get an exact solution by using either substitution or elimination :
2x - y = -1
6x + 3y = 0