ZahariD729602 ZahariD729602

28-10-2022
Mathematics

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What is the solution to the system? x + y = 20 32x + 54y = 816 a) (10,10) b) (5, 15) c) (12,8) d) (8,12)

What is the solution to the system x y 20 32x 54y 816 a 1010 b 5 15 c 128 d 812 class=

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BriyanaG642136 BriyanaG642136

28-10-2022

x+ y =20 (a)

32x+54y= 816 (b)

Multiply (a) by 32 and subtract (a) to (b). Then solve for y:

32x+54y= 816

-

32x+32y=640

___________

22y= 176

y= 176 /22

y= 8

Replace y on (a) and solve for x

x+8=20

x=20-8

x=12

Solution:

(x,y) = (12,8) option c

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