I think it might be the 3rd one.
Someone correct me if I'm wrong please.
Answer:
Both expressions have different base.
Step-by-step explanation:
Product rule can only be use for the similar bases. For example 2² × 2⁴ have the same base.
For this question, 3⁴ × 2⁸ have different bases which is 3 and 2.
.21 is decimal form, 21/100 is the fraction in simplest form.
You can only solve this by having the same base on each side. So to change 1/27, you can use 3^-3, which is then multiplied through. So the equation is:
4x-5=-3(2x+10)
4x-5=-6x-30
10x=-25
x=-2.5
