exam
Maths Puzzle
Numerical Ability
3a+9b=8b-9
5a-10b=4a-9b+5
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exam Other Question
All parallel lines have the same slope, and not all systems of equations have common solution. Is that true or false?
I have a question about how you simplify fractions with variables. Here is a problem with its solution. Why is the answer not simplified into a mixed number?
3 over 10q plus 9 over 10 q equals 6 over 5 q?