x+y=3,4x-3y=36 substitution method
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Step-by-step explanation:
Substitute method:
Given pair of linear equations:
x+y = 5 => x = 5-y ---(1)
2x-3y=4 ---(2)
Substitute x = 5-y in equation (2), we get
=> 2(5-y)-3y = 4
=> 10-2y-3y = 4
=> 10-5y=4
Substitute y in equation (1),
Elemination method:
x+y=5 ---(1)
2x-3y=4---(2)
/* Multiply equation (1) by 3 ,and add to equation (2) ,we get */
2x-3y=4
3x+3y = 15
_______________
5x = 19
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