Homework Help: algebra

Posted by sally on Friday, March 1, 2013 at 2:59pm.

Solve.
x/9-1/7=26/63

STEP 1: The LCM is _________ To clear denominators, multiply each side of the equation by the LCM.
_______/1 (x/9-1/7)=__________/1 multiply 26/63.

STEP 2: Use the Distributive Property.
_____/1 multiply x/9 - _________/1 multiply 1/7 = ______________.

STEP 3: Multiply and simplify each side of the equation using the Properties of Fractions.
________/1 multiply x/9 - _______/1 multiply 1/7= _______________.

STEP 4: Solve for x. _____________

Please help me fill in the blanks. I know that the answer is 5 but no matter what i put in the blanks the system is rejecting my answers. Help

algebra - Reiny, Friday, March 1, 2013 at 5:28pm
On paper, this is how I would expect students to do this

x/9 = 1/7 = 26/63

multiply each side by 63, the LCD

63(x/9) - 63(1/7) = 63(26/63)
7x - 9 = 26
7x = 35
x = 5

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