Final answer:
The expression 3x7 - 4x82 is solved by first performing the multiplication operations (3x7 and 4x8) and then doing the subtraction and addition to find the answer of -9, which is not listed in the provided options.
Step-by-step explanation:
The question asks to solve the mathematical expression 3x7 - 4 x 8 2. To find the equivalent, each part of the expression must be calculated separately and then combined together. The expression should likely read as 3x7 - 4x8 + 2, assuming there is a typographical error in the original question.
First, multiply 3 by 7:
3 x 7 = 21
Next, multiply 4 by 8:
4 x 8 = 32
Finally, subtract the result of 4x8 from 3x7 and add 2:
21 - 32 + 2 = -11 + 2 = -9
Therefore, the correct answer is not listed among the options given a) -25, b) -7, c) 25, d) 43. There seems to be a mistake as the correct answer is -9 based on the provided expression.