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Substitute 3x -4 for y in the equation 7x - 5y = 4.
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Substitute 3x -4 for y in the equation 7x - 5y = 4.

User Nisanth Kumar
by
4.2k points

2 Answers

3 votes

Answer:

see explanation

Explanation:

Substituting y = 3x - 4 into the equation gives

7x - 5(3x - 4) = 4 ← distribute and simplify left side

7x - 15x + 20 = 4

- 8x + 20 = 4 ( subtract 20 from both sides )

- 8x = - 16 ( divide both sides by - 8 )

x = 2

Substitute x = 2 into y = 3x - 4

y = 3(2) - 4 = 6 - 4 = 2

User Viswanatha Swamy
by
4.1k points
5 votes

Explanation:

click the photo there is answer

Substitute 3x -4 for y in the equation 7x - 5y = 4.-example-1
User Black Flag
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