Answer:

Step-by-step explanation:
Start with:

Distribute the
into
:

Combine like terms:

Add
to both sides of the equation:

Subtract
from both sides of the equation:

Divide both sides of the equation by the coefficient of
, which is
:

or

Answer: 12
Step-by-step explanation: Since 11 is ruled out, answer is 12 people
Easyyy, you do the opposite
21 + 3 = 24
24/2 = 12
X = 12
Answer:
x= 20
Step-by-step explanation: 20+5 is 25 degrees 20 times 7 is 140-5 is 135 degrees +20 degrees equals 180 degrees