Question

solve for x a 12, b -10 ,c -12 ,d 12​

Answer 1

Answer:

$\huge{ \fbox{ \sf{10}}}$

Step-by-step 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

$\longrightarrow{ \sf{ \frac{8x}{8} = \frac{80}{8} }}$

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

The value of x is 10

Hope I helped!

Best regards! :D

~$\sf{TheAnimeGirl}$