Answer:
7n-10
Step-by-step explanation:
=(5n-3) - (-2n) -7 [Bracket Opens]
=5n - 3 +2n -7 [- × - = +]
=7n - 10 [ addition]
Number 2 is A and number 3 Is A.
divide
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105.4º
supplementary angles total 180º
180 - 74.6 = 105.4º
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