X + y = 26
3x + y = 56
Please help me! Show Working Please
2 answers:
Step-by-step explanation:
(X + y = 26) (-3)
3x + y = 56
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- 3 x - 3y = - <u>78</u><u> </u><u> </u><u>Note</u>:cross <em>3x</em> and<em>-3x</em> from both equations (they're opposite)
3x +y =56
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-3y +y = - 78 +56
-2y = - 22
![y = \frac{ - 22}{ - 2} = 11](https://tex.z-dn.net/?f=y%20%3D%20%20%5Cfrac%7B%20-%2022%7D%7B%20-%202%7D%20%20%3D%2011)
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So we replace y in eq 2: (to obtain x)
3x + 11 =56
3x =45
X =15
Answer:
x = 15
y = 11
Step-by-step explanation:
15+11=26
(3*15)+11=56
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