Mister Exam

-2(x-4)=3+7x equation

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Numerical solution:

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The solution

You have entered [src]
-2*(x - 4) = 3 + 7*x
$$- 2 \left(x - 4\right) = 7 x + 3$$
Detail solution
Given the linear equation:
-2*(x-4) = 3+7*x

Expand brackets in the left part
-2*x+2*4 = 3+7*x

Move free summands (without x)
from left part to right part, we given:
$$- 2 x = 7 x - 5$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-9\right) x = -5$$
Divide both parts of the equation by -9
x = -5 / (-9)

We get the answer: x = 5/9
The graph
Rapid solution [src]
x1 = 5/9
$$x_{1} = \frac{5}{9}$$
x1 = 5/9
Sum and product of roots [src]
sum
5/9
$$\frac{5}{9}$$
=
5/9
$$\frac{5}{9}$$
product
5/9
$$\frac{5}{9}$$
=
5/9
$$\frac{5}{9}$$
5/9
Numerical answer [src]
x1 = 0.555555555555556
x1 = 0.555555555555556
The graph
-2(x-4)=3+7x equation