exam Maths Puzzle Numerical Ability

7x-2y=-2 3x-3y=7
Solve the following system of linear equation by elimination

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exam Other Question

If I compared equations with one variable to equations with two variables.
How are they alike? How are they different? Can someone help me on this problem?

I need to write the following phrase using symbols.

4 times the sum of m and q

Thanks,
Sher