exam Maths Puzzle Numerical Ability

Text Book-Beginning and Intermediate Algebra with application and visualization
Question.

Is the ordered pair (3,1) a solution to the system 2x=3y=6
-5+2y=3 ?

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exam Other Question

Solve and graph on a number line: -3x-13>-4,D = {Integers} A jar contains 5-gram bolts and 10-gram bolts. The contents of the jar weigh 2.35kg. If there are 300 bolts altogether, how many are there of each kind?