Mister Exam
Other calculators
-
How to use it?
- Equation:
-
Equation 3/(x-5)+8/x=2
-
Equation 0,144:(3,4-x)=2,4
-
Equation (-2x+1)*(-2x-7)=0
-
Equation 1/x^2-1/x-6=0
- Express {x} in terms of y where:
- -5*x-2*y=9
- 8*x-19*y=16
- 3*x-12*y=3
- 19*x+6*y=8
-
Identical expressions
- two - three (two x+2)= five -4x.
- 2 minus 3(2x plus 2) equally 5 minus 4x.
- two minus three (two x plus 2) equally five minus 4x.
- 2-32x+2=5-4x.
-
Similar expressions
- 15x^2-32x+21=0
- 2-3(2x+2)=5+4x.
- 2+3(2x+2)=5-4x.
- 2-3(2x-2)=5-4x.
2-3(2x+2)=5-4x. equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Expand brackets in the left part
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$- 6 x = 9 - 4 x$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-2\right) x = 9$$
Divide both parts of the equation by -2
We get the answer: x = -9/2
2-3*(2*x+2) = 5-4*x
Expand brackets in the left part
2-3*2*x-3*2 = 5-4*x
Looking for similar summands in the left part:
-4 - 6*x = 5-4*x
Move free summands (without x)
from left part to right part, we given:
$$- 6 x = 9 - 4 x$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-2\right) x = 9$$
Divide both parts of the equation by -2
x = 9 / (-2)
We get the answer: x = -9/2
Sum and product of roots
[src]
sum
-9/2
$$- \frac{9}{2}$$
=
-9/2
$$- \frac{9}{2}$$
product
-9/2
$$- \frac{9}{2}$$
=
-9/2
$$- \frac{9}{2}$$
-9/2
The graph