Answer:
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Step-by-step explanation:

Write -13x as a difference

Factor out x from the expression

Factor out -10 from the expression

Factor out x-3 from the expression

Hope I helped!
Best regards!!
If the last one is supposed to be 7(8+3), it would be equivalent to 56+21
Y equals nine x minus five I’m sorry I don’t know if I did the right thing but yeah
The answer is b this is because you add the angles