davelopez979
31.12.2020 •
Mathematics
Need help thank you.
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Ответ:
x = 20
Step-by-step explanation:
The three angles make up a straight line.
A straight line has 180 degrees.
x + 3x + 100 = x80 Combine
4x + 100 = 180 Subtract 100 from both sides
4x = 180 - 100
4x = 80 Divide by 4
x = 80/4
x = 20
Ответ:
x/2 = -5 - 1
x/2 = -6 multiply both sides by 2
x = -6 * 2
x = -12