70
Chat with our AI personalities
280. 8 = 23 10 = 2 x 5 14 = 2 x 7 lcd = 23 x 5 x 7 = 280
The lowest common denominator of 5/42 and 7/30 is 210.
Guessing that is: 9 2/7 - 6 5/7 = (8 + 1 + 2/7) - 6 5/7 = (8 + 7/7 + 2/7) - 6 5/7 = 8 9/7 - 6 5/7 = 2 4/7 Alternatively, using improper fractions: 9 2/7 - 6 5/7 = (9x7+2)/7 - (6x7+5)/7 = 65/7 - 47/7 = 18/7 = (2x7+4)/7 = 2 4/7
1) Factor both the denominator and numerator 2) State restrictions 3) Reduce fraction if possible 4) Find LCD 5) Multiply LCD into both numerator and denominator 6) Cross out the like terms 7) Add and Subtract 8) Simplify if possible
Points: (7, -2) and (-5, -2) Slope: (-2--2)/(7--5) = 0