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3/2x-7=-7x+22
We move all terms to the left:
3/2x-7-(-7x+22)=0
Domain of the equation: 2x!=0We get rid of parentheses
x!=0/2
x!=0
x∈R
3/2x+7x-22-7=0
We multiply all the terms by the denominator
7x*2x-22*2x-7*2x+3=0
Wy multiply elements
14x^2-44x-14x+3=0
We add all the numbers together, and all the variables
14x^2-58x+3=0
a = 14; b = -58; c = +3;
Δ = b2-4ac
Δ = -582-4·14·3
Δ = 3196
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{3196}=\sqrt{4*799}=\sqrt{4}*\sqrt{799}=2\sqrt{799}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-58)-2\sqrt{799}}{2*14}=\frac{58-2\sqrt{799}}{28} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-58)+2\sqrt{799}}{2*14}=\frac{58+2\sqrt{799}}{28} $
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