21=-7/4

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Solution for 21=-7/4 equation:


21=-7/4

We simplify the equation to the form, which is simple to understand 
21=-7/4

Simplifying:
21=-1.75

We move all terms containing  to the left and all other terms to the right. 
0=-1.75-21

We simplify left and right side of the equation. 
0=-22.75

0=-22.75

The left and right sides are not equal, therefore there is no solution. This equation is invalid.

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