solve by elimination method 3x- y =7 and 4x +y =14
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Answered by
3
3x - y = 7
+ 4x + y = 14
7x = 21
x = 21
7
x = 3
put x = 3 in equation 1
3x - y = 7
3 × 3 - y = 7
9 - y = 7
- y = 7 - 9
- y = - 2
y = 2
Answered by
7
✬ QUESTION ✬
solve by elimination method 3x- y =7 and
4x +y =14
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✿ SOLUTION ✿
3x- y =7 and 4x +y =1
➟ 3x- y =7 Equation 1.
➟ 4x +y =14 Equation 2.
Adding equation 1.and equation 2.
3x- y =7
+ 4x +y =14
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7x = 21
x = 21/7
x = 3
we put value of x =3 in equation 2.
➟4x +y =14Equation 2.
➟4×3+y =14
➟12+y =14
➟ y =14-12
➟ y= 2
The solution is equation3x- y =7 ;4x +y =1
x=3,y=2
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