exam Maths Puzzle Numerical Ability

Instructions: Solve each system by the substitution method.

What is the solution for 3x+y=-7
x-y=-5

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exam Other Question

4x-28/5x-35...write in simplest form hello, i need help w. this certain word problem

maria bought seven boxes. a week later half of all her boxes were destroyed in a fire. there are now only 22 boxes left. with how many did she start?

thank you in advance.