Question

Need help with a math question

Answer 1

x=7

Explanation:

Equate the angles 7x-7 and 4x+14 and solve:

7x-7 = 4x+14

7x-4x = 14+7

3x = 21

x = 7

Answer 2

x = 7

Explanation:

Alternate interior angles are equal. Alternate interior angles look like these two angles.

7x - 7 = 4x + 14 Add 7 to both sides

7x - 7 + 7 = 4x + 14+7 Combine

7x = 4x + 21 Subract 4x from both sides

7x-4x = 4x - 4x + 21 Combine

3x = 21 Divide by 3

3x/3 = 21/3 Do the division

x = 7