Question

Which is the value of x?

Answer 1

Answer:

lower Right.

Step-by-step explanation:

Remark

The two angles share the same side of vertically opposite angles. That makes them supplementary which means the two angles add to 180 degrees.

Equation

4x + 8x + 12 = 180         Combine like terms on the left

Solution

• 12x + 12 = 180                Subtract 12 from both sides
• 12x = 180 - 12                 Combine
• 12x = 168                        Divide by 12
• x = 168/12
• x = 14