Answer:
a. (5x+75)°
b. x = 21
c. X° = 21° and (4x+75)°= 159°
Explanation:
A. Combine like integers.
B. (5x+75)°=180° Because they are suplementary angles.
5x°= 105°
5x ÷5 = 105 ÷ 5
x = 21
C. (4x + 75)°
4(21) + 75
84 + 75 = 159°
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