solve the following pair of linear equations by method of substitution 2x-5y=4,3x-8y=5
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2x-5y=4.........equation(1)
3x-8y=5..............equation(2)
Equation(1)
2x-5y=4
2x=4+5y
x=(4+5y)/2............equation(A)
Equation(2)
3x-8y=5.........equa.(2)
Put value of (A) in (2)
3[(4+5y)/2]-8y=5
(12+15y)/2-8y=5
(12+15y-16y)/2=5..........(BY TAKING LCM)
12-y=5×2
12-y=10
y=12-10
y=2
Equation(1)
2x-5y=4
Put value of y in any equation.
2x-5y=4
2x-5×2=4
2x-10=4
2x=4+10
2x=14
x=14/2
x=7
HOPE IT HELPS YOU!
༼ つ ◕_◕ ༽つ
༼ つ ◕_◕ ༽つ
2x-5y=4.........equation(1)
3x-8y=5..............equation(2)
Equation(1)
2x-5y=4
2x=4+5y
x=(4+5y)/2............equation(A)
Equation(2)
3x-8y=5.........equa.(2)
Put value of (A) in (2)
3[(4+5y)/2]-8y=5
(12+15y)/2-8y=5
(12+15y-16y)/2=5..........(BY TAKING LCM)
12-y=5×2
12-y=10
y=12-10
y=2
Equation(1)
2x-5y=4
Put value of y in any equation.
2x-5y=4
2x-5×2=4
2x-10=4
2x=4+10
2x=14
x=14/2
x=7
HOPE IT HELPS YOU!
༼ つ ◕_◕ ༽つ
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