answer a)
soln,
or, 4x + 84 = 180° [being co-interrior angle]
or, 4x = 180 - 84
or, 4x = 96
or, x = 96/4
x = 24
answer b)
soln,
or, 2x + 5 = 135° [being corresponding angle]
or, 2x = 135 - 5
or,2x = 130
or, x = 130/2
x = 65°
Step-by-step explanation:
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