3X - y = 3 , 7x+2y=20 by substitution method
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Answer:---
1) 3x-y=3
y=3x-3...(1)
2) 7x+2y=20
7x +2(3x-3)=20. {From eq.1}
7x+6x-6=20
13x=26
◆x=26◆
PUT IN EQ.1--
y=3x-3 =26(3)-3 = 78-3 =75
●y=75●
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