Question

find the value of x&y by substitution method
x+2y=5 equation 1
2x-3y=-4 equation 2​

Answer 1

Answer:

$x + 2y = 5 \\ x = 5 - 2y$

substituting substituting x= 5 - 2 inequation two.

$2x - 3y = - 4 \\ 2(5 - 2y) - 3y = - 4 \\ 10 - 4y - 3y = - 4 \\ 10 - 7y = - 4 \\ - 7y = - 4 - 10 \\ 7y = 14 \\ y = \frac{14}{7} \\ y = 2$

substituting substituting y is equal to 2 in equation 1

$x + 2y = 5 \\ x + 2 \times 2 = 5 \\ x + 4 = 5 \\ x = 1$

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Answer 2

Step-by-step explanation:

By substitution method

x+2y=5 -----------(1)

x = 5-2y

2x-3y= -4 ----------(2)

substituting the value of x in equation (2).

so, 2(5-2y)-3y= -4

=> 10-4y-3y = -4

=> 7y = 14

=> y = 2

subtituting the value of y in equation (1)

so, x+2y=5

=> x+2×(2)=5

=> x=1

therefore value of x=1

and y=2.

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