Mary is solving the equation: 3(x + 4)= 7x - 20. The first thing she does is rewrite the equation shown below. Which property di
d Mary use to get from the original equation to her rewritten equation? 3x + 12= 7x - 20. Please explain your answer to the question and start operations used to describe the property choice.
1 answer:
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Answer:
The three angles form a "linear triplet" , so their measures must add up to
Step-by-step explanation:
Notice that the three angles add up to cover half a circle (therefore 180 degrees of angle. Such type of angle combination is called a "linear triplet" since they add up to give a straight line.