3 years ago

Hello! Can someone help me with a substitution problem? Pre-Alg level. 3x+9y=42 y=2x

Mathematics

1 answer:

timofeeve [1]3 years ago

6 0

Answer:

x=2

Step-by-step explanation:

The equation becomes 3x+9(2x)=42. Then you distribute the 9 into the 2x. Combine 3x and 18x for 21x=42. Divide 21 by both sides and you get x=2.

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