Final answer:
The value of the expression 4.2 x 3(2.1) - (-0.2) + 1 is 27.66, obtained by performing multiplication followed by addition and subtracting negative numbers.
Step-by-step explanation:
The question involves evaluating a given numerical expression: 4.2 x 3(2.1) - (-0.2) + 1. First, we handle the multiplication within the expression, then subtract the negative number, and lastly, add up the numbers.
- Multiply 4.2 by 3 to get 12.6.
- Multiply 12.6 by 2.1 to get 26.46.
- Subtracting the negative number (-0.2) is the same as adding 0.2, which gives us 26.66.
- Finally, add 1 to get the value of the expression, which is 27.66.
Therefore, the value of the expression is 27.66.