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7 votes
HELP ME PLEASE SOMEONE

How do i do the substitution method for this:
y=x-1
and
y=-x+5

2 Answers

11 votes

Answer:

x = 3

y = 2

Explanation:

Since both equations are equal to y, you can set them equal to each other.

So...

x - 1 = -x + 5

Combine like-terms and simplify. Isolate the x. Add the x to the left from the right and add the 1 to the right from the left. Then divide to completely isolate the x.

2x = 6

x = 3

Now we just plug 3 in place of x for either equation.

y = (3) - 1

y = 2

User Pono
by
7.6k points
12 votes

Answer:

Explanation:

Think this way

Solve one equation for one of the variables.

Substitute (plug-in) this expression into the other equation and solve.

Resubstitute the value into the original equation to find the corresponding variable.

User Avani Bataviya
by
7.4k points

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