exam
Maths Puzzle
Numerical Ability
Solve by substitution or elimination:
x=3y+11
2x+5y=0
I dont understand could I please have help for this question?
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exam Other Question
x+5y=10
-2x-10y=-20
2x+10y=20
-2x-10y=-20
0 = 0
Just double check to make sure this is right?
Please help me solve this one, I have worked on it for some time and cannot figure it out.
2x/9-5x/4=7/36