3 years ago

Substitution..... please help ((: y=2x x+3y=21

Mathematics

1 answer:

lutik1710 [3]3 years ago

7 0

Y = 2x

x + 3y = 21

x + 3(2x) = 21

x + 6x = 21

7x = 21

7x/7 = 21/7

x = 3

2(3) = y
y = 6

hope this helps

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