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Writing Equations 2

Algebra Level 1

Sam ( $S$ ) owns three times as many marbles as Jenny ( $J$ ). Ed ( $E$ ) owns half as many marbles as Jenny. How many marbles ( $M$ ) do they own together?

3J+J+0.5J=M

E+S=J

J+2.5J=M

3S+J+0.5E=M

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by Jordan Calmes

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