3(x-7.1)=4(4.2-x)

Solution for 3(x-7.1)=4(4.2-x) equation:

3(x-7.1)=4(4.2-x)

We move all terms to the left:

3(x-7.1)-(4(4.2-x))=0

We add all the numbers together, and all the variables

3(x-7.1)-(4(-1x+4.2))=0

We multiply parentheses

3x-(4(-1x+4.2))-21.3=0


We calculate terms in parentheses: -(4(-1x+4.2)), so:

4(-1x+4.2)

We multiply parentheses

-4x+16.8

Back to the equation:

-(-4x+16.8)


We get rid of parentheses

3x+4x-16.8-21.3=0

We add all the numbers together, and all the variables

7x-38.1=0

We move all terms containing x to the left, all other terms to the right

7x=38.1

x=38.1/7

x=5+2.8181818181818/6.3636363636364