## lvasquev462 2 years ago Algebra 1 help

1. siegel

Ok, what do you need?

2. lvasquev462

ok i have 7x - 9 - 2x = 10 - 3x + 5 Solve

3. siegel

well, you combine like terms, so what are the like terms?

4. lvasquev462

the x es

5. lvasquev462

9x right

6. siegel

well let's look at it (7x)+(- 9)+(- 2x) = (10)+(- 3x)+(5) you know that subtraction is adding a negative, so what is the sum of the like terms on the left side of the equation?

7. lvasquev462

-5x

8. siegel

close, let's just look at the cooeficients, 7+(-2)

9. lvasquev462

5

10. siegel

right, now what are the like terms on the right side of the equation.

11. lvasquev462

nothing just the 3x right

12. siegel

well a like term does not have to contain a variable

13. siegel

so 10 and 5 are like terms because they don't have variables. like terms have the same variable, it could be x or nothing at all. x^2 and x are not like terms, but 4x^2 and 8x^2 are, and 3x and 6x are. at the same time 3 and 9 are like terms in an equation

14. lvasquev462

oh ok

15. siegel

is that too confusing?

16. lvasquev462

yeah kinda but i can go through it

17. lvasquev462

so it will be 15 right

18. siegel

right , so what is the equation with the combined like terms

19. lvasquev462

would it be x= 3

20. siegel

slow down, just put in what you said were like terms

21. lvasquev462

5x and 15