((x+9)/3)-(x/7)=2 equation
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The solution
Detail solution
Given the linear equation:
((x+9)/3)-(x/7) = 2
Expand brackets in the left part
x/3+9/3)-x/7 = 2
Looking for similar summands in the left part:
3 + 4*x/21 = 2
Move free summands (without x)
from left part to right part, we given:
$$\frac{4 x}{21} = -1$$
Divide both parts of the equation by 4/21
x = -1 / (4/21)
We get the answer: x = -21/4
Sum and product of roots
[src]
$$- \frac{21}{4}$$
$$- \frac{21}{4}$$
$$- \frac{21}{4}$$
$$- \frac{21}{4}$$
$$x_{1} = - \frac{21}{4}$$