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-x+12=(10x/9)-7
We move all terms to the left:
-x+12-((10x/9)-7)=0
We add all the numbers together, and all the variables
-x-((+10x/9)-7)+12=0
We add all the numbers together, and all the variables
-1x-((+10x/9)-7)+12=0
We multiply all the terms by the denominator
-1x*9)-7)-((+10x+12*9)-7)=0
We add all the numbers together, and all the variables
-1x*9)-7)-((10x+108)-7)=0
We add all the numbers together, and all the variables
-1x*9)-7)-((10x=0
Wy multiply elements
-9x^2=0
a = -9; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-9)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{0}{-18}=0$
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