Question

6480-1820= ? +3750
a) 1210
b) 1200
c) 1500
d) 1270​

Answer 1

6480 - 1820 = x+ 3750

6480 - 1820 = 4660

4660 = x+3750

x = 4660 - 3750

x = 910

Answer 2

Answer:

The answer is not either A, B, C or D.

The unknown should be 910.

Explanation:

Let A be the unknown.

               6480 - 1820 = A + 3750

                                -A = 3750 - 6480 + 1820

                                -A = -910

                              ∴ A = 910

Hope it's correct.