Question

X + y = 26
3x + y = 56

Please help me! Show Working Please

Answer 1

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

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-3y +y = - 78 +56

-2y = - 22

`y = ( - 22)/( - 2) = 11`

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

3x + 11 =56

3x =45

X =15

Answer 2

x = 15

y = 11

Explanation:

15+11=26

(3*15)+11=56