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Maths Puzzle
Numerical Ability
Solve the following system of equations both graphically and algebraically (either by substitution or elimination)
-3x - 5y = 22
4x - 7y = -39
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book Other Question
could someone please help me? translate "the difference between twelve times a number and the number" into a mathematical expression. thank-you
(1 1/4)*(-2 3/5)=