Question

Help please! 20 points!

Answer 1

$x+100+3x=180\\4x=80\\x=20$

Answer 2

$\text{Hey there!}$

$\text{Note: This line/triangle have a degree of 180}$

$\text{Firstly, you have to set up your equation, which is:}$ $\text{x + 100 + 3x =180}$

$\text{Next, COMBINE your like terms: x + 3x}$

$\text{x + 3x = 4x (Side note: the x by itself is equal to a(n) invisible 1)}$

$\text{100 stays the same because it doesn't have a like term}$

$\text{4x + 100 = 180}$

$\text{Thirdly, we have to SUBTRACT by 100 on your sides:}$ $\text{4x + 100 - 100}\\\text{180 - 100}$

$\text{Cancel out: 100 - 100 because it equals to 0}$

$\text{Keep: 180 - 100 because it helps us solve for our answer}$

$\text{Our new equation becomes: 4x = 80}$

$\text{Fourthly, we have to DIVIDE by 4 on each of your sides:}$ $\dfrac{4x}{4}=\dfrac{80}{4}$

$\text{Cancel out:}\dfrac{4x}{4}\text{ because it gives us the result of 1}$

$\text{Keep:}\dfrac{80}{4}\text{ because it helps us solve for our answer}$

$\uparrow\text{If you solved the kept answer correctly you would have your answer for x}$

$\boxed{\boxed{\bf{Answer: x = 20}}}\checkmark$

$\text{Good luck on your assignment and enjoy your day!}$

~ $\frak{LoveYourselfFirst:)}$