Question

Solve for x a 12, b -10 ,c -12 ,d 12​

Answer 1

`\huge{ \fbox{ \sf{10}}}`

Explanation:

Remember that The sum of the interior angles of a triangle is two right angles ( 90 + 90 ) or 180 . Create an equation:

`\sf{ \: 8x + 60 + 40 = 180}`

In the question, we are asked to find the value of x.

Now , Add the numbers : 60 and 40

`\longrightarrow \sf \: 8x + 100 = 180`

Move 100 to RHS ( Right Hand Side ) and change it's sign

`\longrightarrow{ \sf{8x = 180 - 100}}`

Subtract 100 from 180

`\longrightarrow{ \sf{8x = 80}}`

Divide both sides by 8

`\longrightarrow{ \sf{ (8x)/(8) = (80)/(8) }}`

`\longrightarrow{ \sf{x = 10}}`

The value of x is 10

Hope I helped!

Best regards! :D

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`\sf{TheAnimeGirl}`