How to solve.
(6.7 x 10^-16) - (8.2 x 10^-17

5.9 × 10⁻¹⁶

Step-by-step explanation:

To solve this, you need to  convert one of the two numbers to the same power of ten as the other.  We can do that by multiplying the first number by 10:

6.7 × 10⁻¹⁶ - 8.2 × 10⁻¹⁷

= 67× 10⁻¹⁷ - 8.2 × 10⁻¹⁷

= (67 - 8.2) × 10⁻¹⁷

= 58.8 × 10⁻¹⁷

= 5.9 × 10⁻¹⁶

Note that we're rounding to the nearest tenth, as the original numbers given were as well.

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step-by-step explanation:

nndncnd cnn

snddnd

we can't see all full 4 options, but if this is the full option, than the very left one is correct:

-2/5 * -3 3/4

remake the question, adding a picture of all the question, or write down the full left and right answers.