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