exam Maths Puzzle Numerical Ability

Solve the system by graphing.
2x + y = 4
x + y = 3
Please help

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exam Other Question

1. which is the largest set of ratios in the set: 4/5 over 1/3, 7/8 over 1/4, 7/9 over 1/6, 2/3 over 1/5, 9/11 over 1/4 2.which is the largest: 1 3/4 over2/3, 2 1/2 over3/4, 2 1/8 Can you help me solve this: The line tha tis parallel to x-2y+7+0 and contains (-4,0).