Question

If 5x – 4 = 31, what is the value of x?​

Answer 1

Answer:

x = 5 $\frac{2}{5}$

Step-by-step explanation:

Hi there!

So, to answer this problem, I'll use the reverse method.

31 - 4 = 27,

So how many times, can 5 go into 27?

The closest factor of 5 to 27 is 25.

5 can go in to 27,  5 times.

Continuing on, there is a 2 left over, so the answer to your question is

x = 5 $\frac{2}{5}$

5 · 5 $\frac{2}{5}$ - 4 = 31

Let me know if I am incorrect and I will attempt to find the right answer for you.

waffletowne

Answer 2

$\huge\text{Hey there!}$

$\mathsf{5x - 4 = 31}$

$\large\textsf{ADD 4 to BOTH SIDES}$

$\mathsf{5x - 4 + 4 = 31 + 4}$

$\large\textsf{CANCEL out: -4 + 4 because that gives you 0}$

$\large\textsf{KEEP: 31 + 4 because that helps you solve for x}$

$\mathsf{31 + 4 = \bf 35}$

$\large\textsf{NEW EQUATION: 5x = 35}$

$\large\textsf{DIVIDE 5 to BOTH SIDES}$

$\mathsf{\dfrac{5x}{5}=\dfrac{35}{5}}$

$\large\textsf{KEEP: } \mathsf{\dfrac{35}{5}}\large\textsf{ because that helps you solve for x}$

$\large\textsf{New EQUATION: }\mathsf{x = \dfrac{35}{5}}$

$\mathsf{\dfrac{35}{7}= x}$

$\mathsf{\dfrac{35}{7}=\bf 7}$

$\boxed{\boxed{\large\textsf{\huge \bf x = 7 }}}\huge\checkmark$

$\text{Good luck on your assignment and enjoy your day!}$

~$\frak{Amphitrite1040:)}$