(10)/(2.8)=(a)/(4.2)

Solution for (10)/(2.8)=(a)/(4.2) equation:

(10)/(2.8)=(a)/(4.2)

We move all terms to the left:

(10)/(2.8)-((a)/(4.2))=0

We calculate fractions


(-(a*(2.8))/()+()/()=0


We calculate terms in parentheses: +(-(a*(2.8))/()+()/(), so:

-(a*(2.8))/()+()/(

We add all the numbers together, and all the variables

-(a*(2.8))/()+1

We multiply all the terms by the denominator


-(a*(2.8))+1*()


We calculate terms in parentheses: -(a*(2.8)), so:

a*(2.8)

We multiply parentheses

2.8a

Back to the equation:

-(2.8a)


We add all the numbers together, and all the variables

-(+2.8a)+1*()

We add all the numbers together, and all the variables

-(+2.8a)

We get rid of parentheses

-2.8a

Back to the equation:

+(-2.8a)


We get rid of parentheses

-2.8a=0

a=0/-2.8

a=0