3 years ago

Help me out please 5x+4y=11 3x+5y=4 do this in elimination method (with working)

Mathematics

1 answer:

astra-53 [7]3 years ago

6 0

Answer:

Step-by-step explanation:

(5x+4y) - (3x+5y) = 11-4

5x - 3x + 4y = 5y = 7

2x - y = 7

4(2x - y) = 4*7

8x - 4y = 28

(8x - 4y) + (5x + 4y) = 28 + 11

8x + 5x - 4y +4y = 39

13x = 39

x = 3

Hence, x = 3, and y = -1 (5x = 15, 11 - 15 = -4, -4 / 4 = -1)

Hope this helped!

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