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4x+7.5=(4x+8x+3)*1/2
We move all terms to the left:
4x+7.5-((4x+8x+3)*1/2)=0
We add all the numbers together, and all the variables
4x-((12x+3)*1/2)+7.5=0
We multiply all the terms by the denominator
4x*2)-((12x+3)*1+(7.5)*2)=0
We add all the numbers together, and all the variables
4x*2)-((12x+3)*1=0
Wy multiply elements
8x^2=0
a = 8; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·8·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{0}{16}=0$
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