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Please help I'll do anything

solve the system of equations by using substitution

y = 2x+3
x - y= -2​

Please help I'll do anything solve the system of equations by using substitution y-example-1

2 Answers

5 votes

Answer:

(x, y) = (-1, 1)

y = 2x + 3

x - y = -2 since y is equal to 2x + 3 we replace the y in the second equation with 2x + 3

x - (2x + 3) = -2 add like terms

-x - 3 = -2 add 3 to both sides

-x = 1 and x = -1

to calculate value of y we replace x with -1

y = 2x + 3

y = 2 (-1) + 3 and y = 1

User TommasoF
by
8.9k points
5 votes

Answer:

(x, y) = (-1, 1)

Explanation:

y = 2x + 3

x - y = -2 since y is equal to 2x + 3 we replace the y in the second equation with 2x + 3

x - (2x + 3) = -2 add like terms

-x - 3 = -2 add 3 to both sides

-x = 1 and x = -1

to calculate value of y we replace x with -1

y = 2x + 3

y = 2 (-1) + 3 and y = 1

User BrilBroeder
by
8.6k points

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