12+3(x-1)=0 equation
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The solution
Detail solution
Given the linear equation:
12+3*(x-1) = 0
Expand brackets in the left part
12+3*x-3*1 = 0
Looking for similar summands in the left part:
9 + 3*x = 0
Move free summands (without x)
from left part to right part, we given:
$$3 x = -9$$
Divide both parts of the equation by 3
x = -9 / (3)
We get the answer: x = -3
Sum and product of roots
[src]
$$-3$$
$$-3$$
$$-3$$
$$-3$$