Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation laplace(x)=(39/40)
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Equation 0,4x+3,8=2,6-0,8x
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Equation (7-x)^2=(x+3)^2
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Equation 8x=4
- Express {x} in terms of y where:
- 12*x+2*y=-9
- 2*x+6*y=-2
- -9*x-16*y=-1
- -18*x-11*y=7
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Identical expressions
- three , five -x= eight (x+ two , eight)
- 3,5 minus x equally 8(x plus 2,8)
- three , five minus x equally eight (x plus two , eight)
- 3,5-x=8x+2,8
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Similar expressions
- 914x-(3,78x+2,87x)=12,45
- 3,5+x=8(x+2,8)
- 3,5-(x+2)=4,2
- 0,8x+2,8=97,8-0,15x
- 3,5-x=8(x-2,8)
3,5-x=8(x+2,8) 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
Move free summands (without x)
from left part to right part, we given:
$$- x = 8 x + \frac{189}{10}$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-9\right) x = \frac{189}{10}$$
Divide both parts of the equation by -9
We get the answer: x = -21/10
(7/2)-x = 8*(x+(14/5))
Expand brackets in the left part
7/2-x = 8*(x+(14/5))
Expand brackets in the right part
7/2-x = 8*x+8*14/5)
Move free summands (without x)
from left part to right part, we given:
$$- x = 8 x + \frac{189}{10}$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-9\right) x = \frac{189}{10}$$
Divide both parts of the equation by -9
x = 189/10 / (-9)
We get the answer: x = -21/10
Sum and product of roots
[src]
sum
-21 ---- 10
$$- \frac{21}{10}$$
=
-21 ---- 10
$$- \frac{21}{10}$$
product
-21 ---- 10
$$- \frac{21}{10}$$
=
-21 ---- 10
$$- \frac{21}{10}$$
-21/10
The graph