Anyone know how to do this?

-2x-y-15

Step-by-step explanation:

5x+3y+4-9x-8+2x-4y-11

you add the x together

5x+2x=7x

7x-9x=-2x

then yourewrite the problem

-2x+3y+4-8-4y-11

then you can solve for the y

3y-4y= -1y but you do not need to put the 1 since -y is the same as -1y

we can rewrite the problem again

-2x-y+4-8-11

4-8=-4

-4-11=-15

answer

-2x-y-15

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 : )

they used 313 gallons of paint