P = a + (n - 1)b, for b

2 answers:

8 0

P = a + (n - 1)b Subtratc a from both sides
P - a = (n - 1)b Divide both sides by (n - 1)
$\frac{P - a}{n - 1}$ = b Switch the sides to make it easier to read
b = $\frac{P - a}{n - 1}$

sweet [91]4 years ago

5 0

The answer is b=P-a-(n+1) all you had to do was the a and the parenthesis from the b and put it on the other side

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