18/42 factor out a 6 6*3/6*7 as the factor 6 appears in both numerator and denominator it can be canceled 3/7 --------simplest form
0.1429
30/35 factor out 5 5*6/5*7 since 5 appears as factor in numerator and denominator it can be canceled = 6/7 --------simplest form
(x - 7)(x + 6)
7 x 7 x 7 x 7 x 7 x 7
18/42 factor out a 6 6*3/6*7 as the factor 6 appears in both numerator and denominator it can be canceled 3/7 --------simplest form
0.1429
30/35 factor out 5 5*6/5*7 since 5 appears as factor in numerator and denominator it can be canceled = 6/7 --------simplest form
(x - 7)(x + 6)
7 x 7 x 7 x 7 x 7 x 7
6
6 x 6 x 6 x 6 x 6 x 6 x 6
The prime factorization of 49 is 7 x 7. In factor form, this can be written as 7^2, where the exponent indicates the number of times the factor (7) is repeated. Therefore, the factor form repeated of 49 is 7^2.
It is: -7*10^6 is equivalent to -7,000,000
7 to the power 6 equals 117649
Factor out the 6, 6*1 : 6*7 as 6 appears in both sides of this ratio as a factor it can be eliminated 1 : 7 ===
Since 21 and 18 have the common factor of 3, reduce 'em to get: 21 to 18 = (3 * 7) to (3 * 6) = 7 to 6