exam Maths Puzzle Numerical Ability

Can not figure this one out?


Solve the system by addition or substitution.
3x - 4y = 8
6x - 2y = 10

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exam Other Question

3x + 4y = 8 for y Hello,
Please help me with this problem ___ What are the points that lie on the line 2x + 3y + 5 = 0

Thanking you