It is 420
(7 - x/4) = 15 x/4 = 7 - 15 x/4 = -8 x = -32 Verification: 7 - ( -32/4) = 7 - (-8) = 7 + 8 = 15
The smallest number into which both 7 and 15 can be divided evenly is 105.
31 because 3+4=7+4=11+4=15+4 does not equal 31
LCM(4, 5, 7) = 140
If x + 7 = 15, then 15 - 7 = x, therefore x = 8.If x = 8, then 4x is equal to 4 x 8 = 32.
15 can of course go into 125, but not an even number of times. 125 / 15 = 8-1/3
There is no such even number.
28
84
84
2x + 7 = 15 Subtract 7 from both sides: 2x = 8 Divide both sides by 2: x = 4
both these number go into the number 112