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Solve for y 85=5y-15 Simplify your answer

2 Answers

0 votes

Answer: y=20

Explanation:

To solve the equation, we first need to add 15 to 85.

15+85=100

Next, we divide 100 by 5 which gives us the answer 20.

y=20

User Deyon
by
9.3k points
3 votes

Answer:

y = 20

Explanation:

Hi! Our task is to solve the equation
\sf{85=5y-15}.

So, first, I'll subtract 85 from both sides:


\rightarrow \sf{-5y=-15-85}


\rightarrow \sf{-5y=-100}

Simplify:


\rightarrow\sf{5y=100}

Next, divide both sides by 5:


\rightarrow \sf{y=20}

Therefore, the value of y is
\sf{20}.


\hspace{370}\above3


\underline{\underline{\bigstar\qquad\textsc{Checking\:Your\:Solution}\qquad\bigstar}}

We will now make sure that 20 is indeed the correct value of y.

The way we'll do that is we'll substitute 20 for y:


\twoheadrightarrow\bf{85=5(20)-15}


\twoheadrightarrow\bf{85=100-15}


\twoheadrightarrow\bf{85=85}

A true statement indicates that y = 20 is indeed the solution of this equation.

User Marcel Tinner
by
8.0k points

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