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bija089 [108]
3 years ago
13

Solve this simultaneous equation? 4x + y = 25 x - 3y = 16

Mathematics
1 answer:
Savatey [412]3 years ago
5 0
X-3y=16 -> x=16+3y Put this x into the first equation -> 4(16+3y) +y=25 -> 64+12y+y=25 -> 13y=25-64 -> y= -3 Put this y into first or second equation ( it's up to you :) X-3y=16 -> x-3(-3)=16 -> x+9=16 -> x = 7 --->> (7;-3) Good Luck
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