Question

solve: -1/2 x + 1 = -x + 8
A. 7
B. 14
C. 18
D. 1/2

Answer 1

@zordoloom @mayankdevnani

Answer 2

Move the variables to the left side and constants to the right.

Answer 3

x=14

Answer 4

Okay so what does this one mean?->> What does it mean for a number to be the "solution" to an equation?


Give an example of a variable equation and its solution.
Explain in complete sentences how you know that number is the solution.

Answer 5

@zordoloom @GeekChic_ @ajprincess

Answer 6

What about this question do you not understand?

Answer 7

nm i understand, i got it.

Answer 8

Just make up any equation. Say for example 3(x+4)=12,
The only solution for this would be 0.
You are pretty much looking for any variable that can replace x.

Answer 9

Just make sure you only have 1 solution. Not 2

Answer 10

OKAY

Answer 11

So Basically, in order for a number to be the "solution" to an equation, the equation can only be true if the variable is equal to that number. If you were to substitute a different number for the variable in the equation, then the two sides of the equation would not be equal.

If you were given the equation:

2(x + 7) = 18

then the only way on earth for the two sides for the equation to be equal (the left side equals the right side) is if the variable "x" were 2. If you were to substitute 2 for x, then the equation would be true, and if you were to substitute any other number, the equation would be false.
So 2 is the ONLY number that could replace "x" and keep the equation true, therefore 2 is the solution to this equation.

Answer 12

Did you type all that up?

Answer 13

yeahh

Answer 14

I got help too

Answer 15

Another quick way is to plug each one in for x, your correct answer is when the constants equal each other.