Answer: x=15
Step-by-step explanation: Since 3x+5 is equal to 50, you can write 3x+5=50, and 3x=45, x=15.
Soooooo sorry but I only understood part a and c.
sorry
Edit: Nevermind I messed up
Answer:
176
Step-by-step explanation:
2+62+77= 141
62/141
400 x 62/141 = 175.8
=176
-18- -27 = -45 -45- -15 = -30