What is 1/9+1/y=4/y
1/9=3/y
do cross multiplication and then divide to find y.
Not exactly kosher math talk, Jessica. Your teacher would want you to say this;
Multiply each side by 9y
9y/9=3*9y/y
y=27
Yahoo!!
To solve the equation 1/9 + 1/y = 4/y, we need to eliminate the fractions and find the value of y.
Step 1: Multiply every term in the equation by the least common denominator (LCD) of 9y to clear the fractions. In this case, the LCD is 9y since 9 is the denominator of 1/9 and y is the denominator of 1/y and 4/y.
(1/9) * 9y + (1/y) * 9y = (4/y) * 9y
After multiplying:
y + 9 = 36
Step 2: Isolate the variable y by subtracting 9 from both sides of the equation:
y + 9 - 9 = 36 - 9
Simplifying:
y = 27
Therefore, the solution to the equation 1/9 + 1/y = 4/y is y = 27.