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9((135-3x)/5)+7x=279
We move all terms to the left:
9((135-3x)/5)+7x-(279)=0
We add all the numbers together, and all the variables
9((-3x+135)/5)+7x-279=0
We add all the numbers together, and all the variables
7x+9((-3x+135)/5)-279=0
We multiply all the terms by the denominator
7x*5)+9((-3x+135)-279*5)=0
We add all the numbers together, and all the variables
7x*5)+9((-3x+135)=0
Wy multiply elements
35x^2=0
a = 35; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·35·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{0}{70}=0$
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