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7 votes
Solve the equation

4y - 7 = 15

Justify your answer

User Mszaro
by
7.3k points

2 Answers

4 votes

Answer: y = 5 ½ or y = 5.5

Explanation:

4y - 7 = 15

Add 7 to both sides of the equation.

4y = 22

Divide both sides by 4

y = 5.5

Substitute y in the original equation.

4(5.5) - 7 = 15

22 -7 = 15

True.

User Robbie Dc
by
8.5k points
5 votes

Given :

  • 4y - 7 = 15

To Find :

  • Value of y = ?

Solution :


\tt \dashrightarrow 4y - 7 = 15


\tt \dashrightarrow 4y = 15 + 7


\tt \dashrightarrow 4y = 22


\tt \dashrightarrow y = \cancel{(22)/(4)}


\tt \dashrightarrow y = (11)/(2)


\tt \dashrightarrow y = 5.5


\large \underline{\boxed{\bf{y = 5.5}}}

Hence, value of y = 5.5.

User Educated
by
8.5k points

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