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Inga [223]
3 years ago
6

Please help with algebra question

Mathematics
2 answers:
marishachu [46]3 years ago
8 0
Hi there!

We can use substitution to solve this equation.

3x + y = 18
        y = 3x

Substitute y from second equation to first one.

3x + 3x = 18
6x = 18
x = 3

Now substitute x = 3 to any of the equation to find y.

3x + y = 18
3(3) + y = 18
9 + y = 18
y = 9


So your solution is ( 3 , 9 ).
Hope this helped! :) 
abruzzese [7]3 years ago
4 0
3 x 3= 9
9+9=18
X=3
That is the answer
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