Question

Using the example in #8, find the value of x

Answer 1

SolutioN :

• Set up an equation & solve for x :

`\star \tt \: 15x - 7 - 3x + 151 = 180` [ Sum of co-interior angles ]

`\longrightarrow \tt \: 12x + 144 = 180`

`\longrightarrow \tt \: 12x = 36`

`\longrightarrow \tt \: x = (36)/(12)`

`\longrightarrow \tt \: x = \boxed{ \tt{3}}`

• The value of x is 3 .

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