exam Maths Puzzle Numerical Ability

System of Linear Equations:

Solve the system using the addition method.

2x+3y=-16
5x-10y=30

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exam Other Question

How do you find the slope of a line through (1,3) and (-2,5)

Also, how do you find the slope of a parallel line passing (1,5) and (-1,0) Given line segment AB with midpoint M(5,-1) and endpoint B(8,2), what are the coordinates of A?