exam Maths Puzzle Numerical Ability

I sent this problem in and made an error on how it has to be solved The system is to be solved by addition. 5x-3y=13 4x-3y=11 Thanks

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exam Other Question

Find the y-intercept. -x - 5y = 15

Graph the inequality. x < -2
Show this problem as the following properties.
6 * (5 + 4)

(a) Distributive property
(b) Commutative property of addition
(c) Commutative property of multiplication