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2(x*4)=7(x*1/7)
We move all terms to the left:
2(x*4)-(7(x*1/7))=0
We add all the numbers together, and all the variables
2(+x*4)-(7(+x*1/7))=0
We multiply parentheses
8x-(7(+x*1/7))=0
We multiply all the terms by the denominator
8x*7))-(7(+x*1=0
Wy multiply elements
56x^2+x=0
a = 56; b = 1; c = 0;
Δ = b2-4ac
Δ = 12-4·56·0
Δ = 1
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{1}=1$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-1}{2*56}=\frac{-2}{112} =-1/56 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+1}{2*56}=\frac{0}{112} =0 $
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