Answer:
Step-by-step explanation:
1
Given x³, we can write the equivalent expression -----------
x^(-3)
1
Given y^(-4) we can rewrite this as ----------
y^4
Here we're applying the "rule of negative exponents."
What have you done so far? Why not start by eliminating the variable x? Do you know how to do that? Hint: use multiplication / division of rows and then addition / subtraction.
Add 5/7 on both sides.
It'll cancel out the negative 5/7, and it will make the x variable only equal to one number (Well, a mixed number.)
Answer:
Addition.
Step-by-step explanation:
Addition was used to add 5 to both sides, leaving x by itself.
95 times 2 is 190.
90 times 2 is 180, and 5 times 2 is 10.
180 + 10 = 190.
