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If y - 16= 4, what is the value of 3(y+5)?

User EastSw
by
7.8k points

2 Answers

6 votes

Answer:

75

Explanation:

First, we solve

y - 16= 4

y = 20

Now we put 20 in for y and solve 3(y+5)

3(20+5)

3(25)

75

So, the answer is 75.

User Jimmy Hannon
by
7.5k points
6 votes


\huge\text{Hey there!}



\mathsf{y - 16 = 4 \rightarrow 3(y + 5)}\\\\\text{FIRST: Let us solve for the first equation}\\\mathsf{y - 16 = 4}\\\textbf{ADD 16 to BOTH SIDES}\\\mathsf{y - 16 + 16 = 4 + 16}\\\textbf{SIMPLIFY it}\\\mathsf{y = 4 + 16}}\\\mathsf{y = 20}\\\\\text{SECOND: Let us plug the value of y into our second equation}\\\mathsf{3(y + 5)}\\\mathsf{= 3(25 + 5)}}\\\mathsf{= 3(25) + 3(5)}\\\mathsf{= 75 + 15}}\\\mathsf{= 90}\\\\\huge\text{Therefore, your answer should be:}


{\mathsf{y = 25 \ when\ we\ found\ \ the\ y-value\ we\ got \ 90 \ for \ the \ answer\ for the \ 2^(nd) \ equation}}}



\huge\text{Good luck on your assignment \& enjoy your day!}


~
\frak{Amphitrite1040:)}