Some equations are solved on the basis of a certain system on the same basis, find out the correct answer for the unsolved equation.
If 8 – 7 = 6, 4 – 7 = 2, 13 – 6 = 12, then what should 18 – 9 be?1
9
2
13
3
14
4
12
Some equations are solved on the basis of a certain system on the same basis, find out the correct answer for the unsolved equation.
If 8 – 7 = 6, 4 – 7 = 2, 13 – 6 = 12, then what should 18 – 9 be?