The number 2.
Let the number be x and so the expression is: 12+x/2
2
6- 6 plus 6 is 12
9
We could represent this in an Algebraic equation, where "x" is the missing number. If we write out the equation we will get:x + (-12) = 19. We simply add 12 to both sides.x + (-12) + 12 = 19 + 12.x = 19 + 12x = 31.When 31 must be added to -12 to obtain 19.
It is: 36-12 = 24
4 litres
5621/12 =468 quotient ,5 remainder Next possibility increase quotient 469*12 gives 5628 now compare both their difference that is 5628-5621=7 so 7 must be added.
4
-40
48
51
The number 2.
Let the number be x and so the expression is: 12+x/2
2
6- 6 plus 6 is 12