Question

Solve for x and y by substitution method

X + Y = 3

4x - 3y = 26

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Linear equation in two variables class 10

Answer 1

Heya !!



X + Y = 3 --------- equation (1)


And,


4X - 3Y = 26 --------- equation (2)


From equation (1) we get,


X + Y = 3


X = ( 3 - Y) --------- equation (3)


Putting the value of X in equation (2)



4X - 3Y = 26


4 × ( 3 - Y ) - 3Y = 26



12 - 4Y - 3Y = 26



-7Y = 26 - 12


-7Y = 14


Y = 14/-7 = -2


Putting the value of Y in equation (3)



X = ( 3 - Y ) = { 3 - (-2)} = 3 + 2 = 5


Hence,



X = 5 and Y = -2

Answer 2

ALOHA , NAMASTE ,SAT SRI AKAL ....MY FRND☺
Here is ur answer⬇️⬇️
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x+y = 3 -----------(i)
4x - 3y = 26 --------(ii)

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USING SUBSTITUTION METHOD :

From equation (i)
x + y = 3
x = 3 - y ---------(iii)

PUTTING THE VALUE OF x in equation (ii)
4x - 3y =26
4(3 - y ) - 3y =26
12 - 4y - 3y =26
-7y = 26 - 12
- 7y = 14
y = -2

PUTTING THE VALUE OF y in equation (iii)
x = 3 - y
x = 3 +2
x = 5

♣️So ,x = 5 & y = -2

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