Question

Given m||n, find the value of (x+12) 4x-7)°

Answer 1

9514 1404 393

Answer:

x = 35

Explanation:

The marked consecutive interior angles are supplementary:

(x +12)° +(4x -7)° = 180°

5x +5 = 180 . . . . . collect terms, divide by °

x + 1 = 36 . . . . . . . divide by 5

x = 35 . . . . . . . . . . subtract 1