exam Maths Puzzle Numerical Ability

hello,

how to solve by graphing:

2x - 3y = 12
3y - 2x = -12

thank you.

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exam Other Question

seven times the reciprocal of a number plus 2/3 is 3. Find the number using number lines from-5 to 15 draw mapping diagrams to illustrate the functions x arrow 3x + 2 and x arrow4x-3