Given: m/-3+10=-1; prove: m=33. Whats the reasonings??

Hi there!  

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I believe your answer is:

[in the section below]

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Here’s why:  

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10 would get subtracted from each side. This would show the subtraction property of equality. The equation would multiplied by '-3' to isolate 'x'. This would show the multiplication property of equality.

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Hope this helps you. I apologize if it’s incorrect.  

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads