28 28 -24 +3 = 7
28
3x - 7 + 4x = 28 7x - 7 = 28 I added 4x and 3x to get 7x 7x = 35 I subtracted 7 from both sides x = 5 I divided by 7 on both sides
0.58 subtracted by 7 = -6.42
-337
7 hours subtracted by 30 minutes = -23
4/7-3/4= firs you want to get both numbers to have the same denominator and 7 and 4 are both multiples of 28, so make 28 the demoninator. 4/7-3/4= ?/28-?/28 <<< so what times 7 gives you 28 and what times 4 gives you 28? you use that answer to replace the question mark, but you have to multiply it by the numbers that were already in the numerator (3 and 4). so now you have 4(4)/28-3(7)/28= 16/28-21/28=-5/28
14
4
If the number, x, has 10 subtracted from twice it to make 28, then x must be 19. 2x - 10 = 28 2x = 38 x = 19
22
-4