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

Step-by-step 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.

x = 3

y = 2

Step-by-step 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

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation: