One less than three times a number is seven

Step-by-step explanation

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x = 8 \3

Decimal Form:

x = 2. ¯6

Mixed Number Form:

x = 2  2 /3

table 3 represents a direct variation function. : )

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation: