Question

linear equation

if 3x+4y=10
4x+3y=2
x+y=______​

Answer 1

For equation 1-
3x+4y=10
=> x=(10-4y)/3
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Now replace value
-> 4x+3y=2
=> 4{(10-4y)/3} +3y =2
=> (40-16y)/3 = 2-3y
=> 40-16y = 6-9y
=> 40-6 = -9y + 16y
=> 34 = 7y
=> y = 34/7
=> y= 4.857
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Hope it helps
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