6x=42-4(30/9) what is the answer to this?

2 Answers
Feb 27, 2018

x = 43 / 9x=439

Explanation:

6x = 42 - 4/1 * 30/96x=4241309

6x = 42 - 13.333...

6x = 28.666...

x = (28.666... )/ 6

x = 4.777...

Feb 27, 2018

x=43/9

Explanation:

We can start by distributing the -4 to the terms in the parenthesis. With this, we get:

6x=42-(120/9)

We can multiply 42 by 9 to get a common denominator. The new fraction will be 378/9.

NOTE: If you don't believe me, try it out. You will see that 378/9 is indeed 42. Our new equation is:

6x=378/9-120/9

We can subtract the numerators to simplify. We get:

6x=258/9

We can divide by 6 or multiply by 1/6 on both sides to get:

x=258/54

This can be further simplified by dividing the numerator and denominator by 6. We get:

x=43/9