1,2,3,6
3x + 12 = 42 3x = 30 x = 10
The lowest common denominator of 5/42 and 7/30 is 210.
4 x 9 = 36 So 9 goes into 42 = 4 times with a remainder of 6
42
6
2
seven
6
42/30 = 1.4 = 140 %
42% of 30= 42% * 30= 0.42 * 30= 12.6
30% of 42= 30% * 42= 0.3 * 42= 12.6
1,2,3,6
... 3.
30 + 42 = 72
7 and 3
42 - 30% = 42 x (1 - (30/100)) = 42 x 0.7 = 29.4