exam Maths Puzzle Numerical Ability

Solve by the elimination method.
4x + 3y = -14
x = 5 - 5y

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exam Other Question

One number is 3 less than another. If 10 times the smaller number minus 3 times the larger number is 33, find the two numbers. Cheryl is dividing her soccer team into 5 groups, 1/2 are forwards,1/6 are halfbacks,1/6 are wings,1/12 are fullbacks and 2 others are goalies. How many players are there on the team and how many in each group?