Question

Find the value of x

Answer 1

x = 30°

Explanation:

• the two values ​​are on a straight line, so 180 degrees, we solve with an equation

3x + 1 + 89 = 180

3x = 180 - 1 - 89

3x = 90

x = 90 : 3

x = 30°

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• check

3 x 30 + 1 + 89 = 180

90 + 90 = 180

180 = 180

• the answer is good

Answer 2

x = 30

Explanation:

3x + 1 + 89 = 180

3x + 90 = 180

3x = 90

x = 30

3(30) + 1 = 91

91 + 89 = 180