Solve the equation 13r = 3/7. Express your answer in the simplest form.
a r = 91/3
b r = 7/39
c r = 39/7
d r = 3/91
Is c the correct answer.
13r = 3/7
r = (3/7) / 13
r = (3/7) * (1/13)
r = 3/91
Menene
To solve the equation 13r = 3/7, you need to isolate the variable r. The equation can be solved by dividing both sides by 13.
Dividing both sides by 13, we get:
r = (3/7) / 13
To simplify this, we can multiply the numerator by the reciprocal of the denominator.
r = (3/7) * (1/13)
Now, multiply the numerators together and the denominators together:
r = (3 * 1) / (7 * 13)
Simplifying further:
r = 3/91
Therefore, the correct answer is d) r = 3/91.