ANSWER:
M = 37 degrees
N = 84 degrees
P = 59 degrees
Rule: Three interior angles of a triangle add up to 180.
Step 1: FIND ‘X’)
M + N + P = 180
4x - 3 + 9x - 6 + 6x - 1 = 180
19x - 10 = 180
19x = 190
x = 10
Step 2: SUBSTITUTE ‘X’ INTO EACH ANGLE EQUATION)
M = 4(10) - 3
= 40 - 3
M = 37
N = 9(10) - 6
= 90 - 6
N = 84
P = 6(10) - 1
= 60 - 1
P = 59