Final answer:
The first step in evaluating the expression 10 + 10 - 7 - 4 + 1x³ is to perform any calculations inside parentheses or brackets, but there are none in this expression. Next, we evaluate any exponentiation, but there is no exponentiation in this expression either. So, we move on to the next step which is performing the multiplication and division operations. However, there are no multiplication or division operations to perform. Finally, we evaluate the addition and subtraction operations from left to right.
Step-by-step explanation:
The first step in evaluating the expression 10 + 10 - 7 - 4 + 1x³ is to perform any calculations inside parentheses or brackets, but there are none in this expression. Next, we evaluate any exponentiation, but there is no exponentiation in this expression either. So, we move on to the next step which is performing the multiplication and division operations. However, there are no multiplication or division operations to perform. Finally, we evaluate the addition and subtraction operations from left to right.
Therefore, the first step is to add 10 + 10, which equals 20. The expression now becomes 20 - 7 - 4 + 1x³. The next step is to subtract 7 from 20, which equals 13. The expression now becomes 13 - 4 + 1x³. Next, we subtract 4 from 13, which equals 9. The expression now becomes 9 + 1x³. Finally, we have the term 1x³, which means we multiply 1 by x three times, resulting in x³. So, the first step in evaluating the expression is to simplify it to 9 + x³.