Question

Solve the formula for the indicated variable.

The formula for the perimeter P of a triangle with sides of length a,b, and c is P=a+b+c. Solve the formula for b.

Answer 1

b = P - a - c

Explanation:

Perimeter P = a + b + c

find b

P - a - c = b

b = P - a - c

Answer 2

Answer: b = p - a -c

Explanation:

p= a + b + c Solving for b means getting b on one side by itself.

p = a + b + c To solve for b first subtract a from both sides to get,

-b -b

p - a = b + c Now subtract c from both sides to get

-c -c

p - a - c = b

b = p - a -c