13x+4
Combine like terms
If there is a minus sign count it as a negative
Cross multiply or just multiply both sides by 24
24x/6=36
4x=36
divide both sides by 4
x=9
Answer:
∠a = 10°
Step-by-step explanation:
The measure of ∠a = x
The measure of ∠b = 4x-30
It is also mentioned that the measure a and measure b are vertical angles. We need to find the value of a.
For vertically opposite angles,
∠a = ∠b
x = 4x-30
or
4x-30=x
Taking like terms together,
4x-x= 30
3x = 30
x = 10
So, the meausre of ∠a is equal to 10°.
Answer:
360
Step-by-step explanation:
Answer:
-12
Step-by-step explanation:
<u>Step 1: Find the answer
</u>
Subtracting a negative number is same as adding a positive number
-28 - (-16)
-28 + 16
-12
Answer: -12
