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3 years ago

X + y = 26 3x + y = 56 Please help me! Show Working Please

Mathematics

2 answers:

Marina CMI [18]3 years ago

8 0

Step-by-step explanation:

(X + y = 26) (-3)

3x + y = 56

____________

- 3 x - 3y = - 78 Note:cross 3x and-3x from both equations (they're opposite)

3x +y =56

____________

-3y +y = - 78 +56

-2y = - 22

$y = \frac{ - 22}{ - 2} = 11$

____________

So we replace y in eq 2: (to obtain x)

3x + 11 =56

3x =45

X =15

melomori [17]3 years ago

4 0

Answer:

x = 15

y = 11

Step-by-step explanation:

15+11=26

(3*15)+11=56

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