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adell [148]
3 years ago
13

Solve the following system of equations by using the substitution method.

Mathematics
1 answer:
Hatshy [7]3 years ago
3 0
X = y + 3
2x + y = 9

Solution..
---------------

Substitute for x=y+3 in the second equation...

2x+y = 9

2(y+3)+y=9

2y+6+y=9
3y+6=9
3y=9-6
3y=3
y=3/3
y=1....

Substitute for y=1 in the first equation...

x=y+3

x = 1+3
x=4..

Am sure the answer is quite evident now...
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