Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation -x=25
-
Equation x^3=5
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Equation 2x=4
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Equation x^2=x+72
- Express {x} in terms of y where:
- 11*x+3*y=-16
- -2*x+13*y=-6
- 20*x-3*y=3
- 18*x-7*y=-4
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Identical expressions
- 3x- thirteen =7x+ seventeen
- 3x minus 13 equally 7x plus 17
- 3x minus thirteen equally 7x plus seventeen
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Similar expressions
- 7*x+17=x-1
- (4x-3)²+(3x-1)(3x+1)=0
- 29,9-34,6x+17.3(x-1)^2-17.3(x-1)^3/6+17.3(x-2)^2/2=0
- 27x^2(x-1)-(3x-1)^3=19
- sqrt(x*(x+7))+sqrt((x+7)*(x+17))+sqrt((x+17)*(x+24))=12+12*sqrt(2)
- 5*x-(3+2*x-2*x^2)=2*x^2-7*x+17
- 3x-13=7x-17
- 3x+13=7x+17
3x-13=7x+17 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Move free summands (without x)
from left part to right part, we given:
$$3 x = 7 x + 30$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-4\right) x = 30$$
Divide both parts of the equation by -4
We get the answer: x = -15/2
3*x-13 = 7*x+17
Move free summands (without x)
from left part to right part, we given:
$$3 x = 7 x + 30$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-4\right) x = 30$$
Divide both parts of the equation by -4
x = 30 / (-4)
We get the answer: x = -15/2
Sum and product of roots
[src]
sum
-15/2
$$- \frac{15}{2}$$
=
-15/2
$$- \frac{15}{2}$$
product
-15/2
$$- \frac{15}{2}$$
=
-15/2
$$- \frac{15}{2}$$
-15/2