Mister Exam
Other calculators
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How to use it?
- Equation:
-
Equation x^2-4x+6=0
-
Equation cos(4*x)=0
-
Equation x^2-21=4x
-
Equation 5x-9=3x+1
- Express {x} in terms of y where:
- -12*x+17*y=-11
- -8*x-16*y=18
- -10*x-19*y=3
- -4*x+18*y=10
- Integral of d{x}:
- -x-7
-
-5x
- Graphing y =:
- -5x
- Derivative of:
-
-5x
-
Identical expressions
- -x- seven =-5x
- minus x minus 7 equally minus 5x
- minus x minus seven equally minus 5x
-
Similar expressions
- (x-5)/3-(x-7)/4//(x+5)/6-(x+7)/3=-3/4
- -x-7=+5x
- x-7=-5x
- (18-x)-7(2x-4)=5x+20
- (-3-x)*(-5-x)*(-7-x)+4-3-x-21-3x=0
- -x+7=-5x
- (x-2)^2-(x-7)^2=15
-x-7=-5x 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:
$$- x = 7 - 5 x$$
Move the summands with the unknown x
from the right part to the left part:
$$4 x = 7$$
Divide both parts of the equation by 4
We get the answer: x = 7/4
-x-7 = -5*x
Move free summands (without x)
from left part to right part, we given:
$$- x = 7 - 5 x$$
Move the summands with the unknown x
from the right part to the left part:
$$4 x = 7$$
Divide both parts of the equation by 4
x = 7 / (4)
We get the answer: x = 7/4
Sum and product of roots
[src]
sum
7/4
$$\frac{7}{4}$$
=
7/4
$$\frac{7}{4}$$
product
7/4
$$\frac{7}{4}$$
=
7/4
$$\frac{7}{4}$$
7/4
The graph