Question

Solve the following system of linear equations by substitution method:

    2x – y = 2

    x + 3y =15

(with all steps clearly stated)​

Answer 1

Answer:

in equation 1

2x - y = 2

-y = 2 - 2x

y = -2 + 2x

put the value of y in equation 2

x + 3y = 15

x + 3(-2 + 2x) = 15

x + (-6) + 6x = 15

7x - 6 = 15

7x = 21

x = 3 ans

so, y = -2 + 2x

y = -2 + 2(3)

y = -2+ 6

y = 4 ans

Answer 2

Answer:

$2x - y = 2$

$x - y = 2÷2$

$x - y = 1$

________________

$x + 3y = 15$

$x + y = 15 ÷ 3$

$x + y = 5$

Step-by-step explanation:

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