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How can you solve a system of linear equation by using substitution? Solve each system by substitutiony=3x + 1y = 5x - 3

User James Wheare
by
3.0k points

1 Answer

10 votes
10 votes

Answer:

The solution to the given system of equations is:

x = 2

y = 7

Step-by-step explanation:

Given the system of equations:

y = 3x + 1 ..................................................................(1)

y = 5x - 3 ..................................................................(2)

To solve this by substitution,

Substitute the expression for y in (2) into (1)

5x - 3 = 3x + 1

Collect like terms

5x - 3x = 1 + 3

2x = 4

Divide both sides by 2

x = 4/2 = 2

Substitute x by 2 in (1)

y = 3(2) + 1

= 6 + 1

= 7

User Aleister
by
2.9k points
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