I can't show the work, but if the problem is printed or on the computer, I recommend using Photomath in the AppStore :)
Answer:
x = 34
Step-by-step explanation:
4x - 10 + x + 20 = 180
5x + 10 = 180
5x = 170
x = 34
Step-by-step explanation:

Answer:
4536363646
Step-by-step explanation:
Answer:
sine 23 = x/21
Multiply both sides by 21
21 x sine 23 = x
Now, use a calculator and find the answer of the 21 times the sine of 23:
x = -17.7706284876