M + L = 9
L = 2M
Substitute
M + 2M = 9
You should be able to solve it from here.
Gabriela V.
asked 12/18/18Johnny bought a total of 9 pizzas for his class party. The amount of large pizzas was twice the amount of medium pizzas. How many large pizzas , l and medium pizzas,m did he buy?
M + L = 9
L = 2M
Substitute
M + 2M = 9
You should be able to solve it from here.
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