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antiseptic1488 [7]
3 years ago
14

Solve the following system of equations: y=x+4 2x+y=13

Mathematics
2 answers:
const2013 [10]3 years ago
4 0
Substitute y from the first equation into the second:

2x+(x+4)=13
3x+4=13
3x=9
x=3.
Mazyrski [523]3 years ago
3 0
Okay, for this one is will use substitution:
y=x+4
y-x=4
2y-2x=8

-2x+2y=8
+
2x+y=13
=
3y=21
y=7
x=3 is your final answer. Hope it help!
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\textit{to make some equivalent, let's use our good friend Mr 1}
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