Spring

Could you retype your question so it is clearer? What is it that you are looking for?

Thank you so much CPhill! :)

Thank you so much CPhill! 😊

Thank you!

\(x=\frac{21}{31} \)

LCM or Least Common Multiplier of 3&7 = 21

\(\frac{x}{7}\cdot \:21+\frac{x}{3}\cdot \:21=1\cdot \:21-x\cdot \:21\)

Simplify:

\(3x+7x=21-21x \)

\(10x=21-21x\)

Add 21x to both sides:

\(10x+21x=21-21x+21x \)

\(31x=21\)

Divide:

\(\frac{31x}{31}=\frac{21}{31}\)

\(x=\frac{21}{31}\)

Hope it helps! :)

Thank you CPhill! 😊

You're very welcome! Glad to help.😃

The expression or equation is: 5x-10=20

First, add 10 to both sides: 

5x-10+10=20+10

5x=30

Then, divide:

5x/5=30/5

x=6

So, 5 times 6 =30.

Subtract 10 from 30 =20.

First, divide both sides by 2:

2(x+8)/2=24/2

x+8=12

Subtract 8 from both sides:

x+8-8=12-8

x=4

Wow! Thank you so much Melody. I greatly appreciate it! 😊