Question

8] Solve simultanious equation x+y = 4 ,2x-5y=1
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Answer 1

Answer:

2x-5y=1_(i)

x+y=4

multiply equation by 5

we get,

5x+5y=20_(ii)

add equation (i) and (ii)

thus

7x=21

x=3

x+y=4

3+y=4

y=1

Answer 2

X+y=4 equation no1
2x-5y=1 equation no2
No2- 2( no1)
2x-5y-2x-2y =1-8
-7y=-7
Y=1
X+1=4
X=3
Muhammed gfgz