Question

Solve for z 6x + 10y + 2z =20
What is the value of z when x = -5 and y= 1
Z=_____

Answer 1

Answer: Z=25

Step-by-step explanation: you have to first substitute x and y for -5 and 1 and then multiply. Whenever you do this you get -30+10+2z=20 to figure this out you need to add the common factors which in this case is -30 and 10 whenever you add them it would be a negative number because 30 is bigger than 10 and 30 is a negative. Whenever you add -30+10 you get -70. You then need to get Z to be by itself so to do this you need to subtract 70 on each side which would be 50 and then since you are multiplying 2 by Z you need to do the inverse operation so then you would divide 2 on each side and your answer is Z=25.

I hope this helps you outs

Answer 2

z= 20

Explanation:

First, substitute the given variables into the equation.

6(-5)+10(1)+2z= 20

Now, multiply to simplify the equation.

-30+10+ 2z= 20

Now, do some simple math to simplify.

(-30+10)+2z= 20

-20+2z= 20

Then, add 20 to both sides of the equation.

-20+2z= 20

+20 +20

2z= 40

Finally, divide both sides by 2 to isolate the variable.

2z= 40

2 2

z= 20