Question

How would I solve for x

Answer 1

10 is your answer for x.

Explanation:

Note that the sum of the angles of a triangle is 180°.

Add all the angles together and set them equal to 180:

60 + 80 + 4x = 180

Simplify. Combine like terms

140 + 4x = 180

Isolate the variable (x). Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First, subtract 140 from both sides

140 (-140) + 4x = 180 (-140)

4x = 180 - 140

4x = 40

Next, to fully isolate the variable (x), divide 4 from both sides:

4x = 40

(4x)/4 = (40)/4

x = 40/4

x = 10

10 is your answer for x.

~

Answer 2

x=10

Explanation:

The 3 angles of a triangle add to 180

4x+60+80 = 180

Combine like terms

4x+140 =180

Subtract 140 from each side

4x+140-140=180-140

4x = 40

Divide by 4

4x/4 = 40/4

x = 10