Answer:
x is equal to -9 thus it becomes -18 in the whole setup
65(7) = 455 sit-ups during a 7 day period
You take alll the answers and just divide each one
Answer:
X=23
Step-by-step explanation:
You should know that a triangle =180 degrees
Add all your angles together and =180
66+2x+3+3x-4=180
add similar terms
5x+65=180
Move your 65 to the other side
5x=115
x=23
(Optional)
to check if your answer is right substitute your x and add all angles together you should get 180 degrees.
It’s doesn’t satisfy the equation
