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x+15=21/6.7.8
We move all terms to the left:
x+15-(21/6.7.8)=0
We add all the numbers together, and all the variables
x+15-(+21/6.7.8)=0
We get rid of parentheses
x+15-21/6.7.8=0
We multiply all the terms by the denominator
x*6.7.8-21+15*6.7.8=0
We add all the numbers together, and all the variables
x*6.7.8+59.4=0
Wy multiply elements
6x^2+59.4=0
a = 6; b = 0; c = +59.4;
Δ = b2-4ac
Δ = 02-4·6·59.4
Δ = -1425.6
Delta is less than zero, so there is no solution for the equation
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