Subtracting rational numbers tell how the commutative and associative properties of addition can help you evaluate the expression
2/5 - 7/10 - (-3/5)

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation:

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!