4/5, because to simplify a decimal, you can divide the numerator by the denominator. 4 divided by 5 is 0.8
Answer:
45
Step-by-step explanation:
Both angles have the same value, therefore, you can set your formula up as
5x-105=2x+30
5x = 2x + 30 + 105
5x - 2x = 135
3x = 135
x = 135/3
x = 45
10(4x-1) is the answer to your question my friend
64 + 2x = 180
2x = 116
x = 58
angle R equals 58 degrees