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2 votes
Solve for b, then find the value of b when a = 3.

4a = 2b − 7 *1 point*

A.-9/2
B. 5/2
C. 19/2
D. 17

2 Answers

2 votes

Answer:

b = 5/2

Explanation:

User Jshbrmn
by
8.5k points
5 votes

Answer: b = 19/2

Explanation:

First, we'll solve for b by rearranging the equation so that b is on one side.

Given equation:


\diamond\quad\sf{4a=2b-7}

Solve.


\sf{2b-7=4a}


\sf{2b=4a+7}


\sf{b=\cfrac{4a+7}{2}}

Now, plug in 3 for a:


\sf{b=\cfrac{4(3)+7}{2}}


\sf{b=\cfrac{12+7}{2}}


\sf{b=\cfrac{19}{2}}

Therefore, b = 19/2.

User EliadL
by
8.1k points

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