Answer:
Step-by-step explanation:
23x + xy - y + 3y + 5 - 20x + 6xy = 23x - 20x + xy + 6xy -y + 3y + 5
= 3x + 7xy + 2y + 5
Errors:1) The combined coefficients of the x terms should be 3x, not 43x
2) The coefficients of the y terms have been multiplied.
3) The constant was left off.
You can use the proportion <u />

or

=

, where you fill in what you know, crossmulitply, and solve for x. You can also write it as an equation, where of=mulitply and is=equal to, and the percent is expressed as a decimal. Your two different equations would be .34x120=x and

=
Answer:
<h2>thank you me and brainiest me</h2>
Step-by-step explanation:
Polynomial equation Solving for 8x + 24 = 0
standard form:8(x + 3) =0
Factorization:
8(x + 3) = 0
solutions
x = −24
8
= −3
Answer: B. (3,9)
Step-by-step explanation:
7x -5y = -24(times by -1)
–9x + 5y = 18
-2x=-6
X= 3
(Substitute 3 in)
-9(3)+5y=18
-27+5y=18
5y=45
Y=9
A. s equals c plus 4. C'mon that was easy.