How do I simplify the expression 8x+2x-3y-9x

Mathematics

2 answers:

zloy xaker [14]3 years ago

8 0

X-3y because 8x+2x-9x is x

Schach [20]3 years ago

5 0

It's like adding and subtracting. All the ones with x's go together, and all the y's go together (or whatever other letters there are.) 8x+2x=10x

10x-9x=1x

1x=x (if there's a letter and the number next to it is 1 it is just the letter)

Now x-3y is your solution because x and y don't go together

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Help! I need to know how to solve this

bagirrra123 [75]

Every triangle measures 180 degrees.
In order to get the answer you need to add every equation and set it equal to 180.

2x+4+2x-9+x=180
Combine like terms.
5x-5=180
Add 5 to the other side.
5x=185
Divide by 5.
x = 37

Now, plug 37 in for every x.
Angle A: 2(37)-9
Angle B: 2(37)+4
Angle C: 37

The measures are:
Angle A = 65
Angle B = 78
Angle C = 37

Hope this helps!

7 0

2 years ago

Answer it please ↓↓

aliya0001 [1]

Step-by-step explanation:

hope this helps to u......