in mathematics and most computer languages multiplication is done before addition; in the expression 2 + 3 × 4, the answer is 14. Brackets, "( and ), { and }, or [ and ]", which have their own rules, may be used to avoid confusion, thus the preceding expression may also be rendered 2 + (3 × 4), but the brackets are unnecessary as multiplication still has precedence without them..

Therefor 7-10+(3x4)

7-10+12

7-10=-3+12=9

If you doubt this answer enter [+7-10+3*4] into an Excel spreadsheet cell.

The answer is 9