To solve for b, we need to isolate b on one side of the equation.
Starting with the equation 4a = 2b - 7, we can start by adding 7 to both sides to get rid of the -7 on the right side:
4a + 7 = 2b
Next, we can divide both sides by 2 to isolate b:
(4a + 7)/2 = b
Simplifying the right side further:
2a + 7/2 = b
Now, plugging in a = 3:
2(3) + 7/2 = b
6 + 7/2 = b
To simplify further, we need to find a common denominator for 6 and 7/2. The common denominator is 2:
12/2 + 7/2 = b
Now, combining the fractions:
19/2 = b
Therefore, when a = 3, b is equal to 19/2.
Solve for b, then find the value of b when a = 3.
4a = 2b − 7
(1 point)
1 answer