Question

Decide which variable to isolate. Then substitute for this variable, and solve the system x=y+4, 3x +y=16

Answer 1

x = y + 4 is already done so we will substitute that into the other equation!

3(y + 4) + y = 16

Distribute.

3y + 12 + y = 16

Add the terms.

4y + 12 = 16

Give y its own side.

4y = 4

Divide by 4.

y = 1

Substitute this back into one of the equations.

x = 1 + 4

x = 5

The point for these 2 equations is (5, 1)

⭐ Answered by Hyperrspace (Ace) ⭐

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