Question

Is this right

the task: Set up and solve an equation to find the value of .
my answer :X = 360 -( 123 + 90)
X = 147

Answer 1

X = 360 - ( 123 + 90 )
X = 360 - 213
X = 147

Answer 2

360 = x+123+ 90

x = 147

Explanation:

The three angles form a circle which is 360 degrees

360 = x+123+ 90

Subtract 123 and 90 from each side

360 -123 - 90 = x

147 = x