The operations property states that

The Commutative Property of Addition states that changing the order of addends does not change the sum. The commutative property of multiplication states that two numbers can be multiplied in either order. The associative property states that you can add any numbers regardless of how the numbers are grouped.

Step-by-step explanation: This may be what you are talking about

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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