Mister Exam
Other calculators
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How to use it?
- Equation:
- Equation x^3-64*x=0
-
Equation 5*x=50
- Equation x+2*y=7
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Equation x^2=-7
- Express {x} in terms of y where:
- -1*x+1*y=16
- -10*x+2*y=19
- -17*x+7*y=6
- -6*x-9*y=-16
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Identical expressions
- zero , five (x- four)+3x= nine , nine
- 0,5(x minus 4) plus 3x equally 9,9
- zero , five (x minus four) plus 3x equally nine , nine
- 0,5x-4+3x=9,9
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Similar expressions
- 0,5(x+4)+3x=9,9
- 0,5(x-4)-3x=9,9
0,5(x-4)+3x=9,9 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
Expand brackets in the right part
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$\frac{7 x}{2} = \frac{119}{10}$$
Divide both parts of the equation by 7/2
We get the answer: x = 17/5
(1/2)*(x-4)+3*x = (99/10)
Expand brackets in the left part
1/2x-4+3*x = (99/10)
Expand brackets in the right part
1/2x-4+3*x = 99/10
Looking for similar summands in the left part:
-2 + 7*x/2 = 99/10
Move free summands (without x)
from left part to right part, we given:
$$\frac{7 x}{2} = \frac{119}{10}$$
Divide both parts of the equation by 7/2
x = 119/10 / (7/2)
We get the answer: x = 17/5
Sum and product of roots
[src]
sum
17/5
$$\frac{17}{5}$$
=
17/5
$$\frac{17}{5}$$
product
17/5
$$\frac{17}{5}$$
=
17/5
$$\frac{17}{5}$$
17/5