Math, asked by aratidanigirl, 1 year ago

Solve for x and y; 139x + 56y = 641 56x + 139y = 724

Answers

Answered by john28
6
x=3,y=4 if u want the steps???
Answered by book0worm
0

Answer:

Given:

139x + 56y = 641   ------------ (1)

56x + 139y = 724   ----------- (2)

(1) + (2) ⇒ 195x + 195y = 1365

x + y = \frac{1365}{195} \\

x + y = 7  ------------------- (3)

(2) - (1) ⇒ 83x - 83y = -83

x + y = \frac{-83}{83} \\

⇒ x + y = -1    --------------------- (4)

(3) +(4) ⇒ 2x = 6

⇒ x = 3

⇒ y = 4

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