TO ELIMINATE X, what does Rachel need to do first? 1 point
Rachel wants to eliminate the variable x to solve the system shown What does she need to do before
combining the equations?
7x + 3y = -1
-6x+2y = 9
Add the equations to eliminate y.
b Subtract the equations to eliminate y
C Divide the first equation by 7
d Multiply each term in 7x + 3y = -1 by 6 and multiply cach term in -6x + 2y = 9 by 7.
a

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )