Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^2+9=(x+9)^2
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Equation -x=4-3(3x-8)
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Equation 9x-7=6x+14
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Equation x+3=-9*x
- Express {x} in terms of y where:
- -18*x-1*y=-11
- 1*x-6*y=-19
- -1*x-20*y=-17
- 7*x+13*y=-13
- Derivative of:
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-x
- Integral of d{x}:
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-x
- Graphing y =:
- -x
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Identical expressions
- -x= four - three (3x- eight)
- minus x equally 4 minus 3(3x minus 8)
- minus x equally four minus three (3x minus eight)
- -x=4-33x-8
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Similar expressions
- 4-3*(3*x-8)=-x
- x=4-3(3x-8)
- -x=4-3(3x+8)
- -x=4+3(3x-8)
-x=4-3(3x-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 right part
Looking for similar summands in the right part:
Move the summands with the unknown x
from the right part to the left part:
$$8 x = 28$$
Divide both parts of the equation by 8
We get the answer: x = 7/2
-x = 4-3*(3*x-8)
Expand brackets in the right part
-x = 4-3*3*x+3*8
Looking for similar summands in the right part:
-x = 28 - 9*x
Move the summands with the unknown x
from the right part to the left part:
$$8 x = 28$$
Divide both parts of the equation by 8
x = 28 / (8)
We get the answer: x = 7/2
Sum and product of roots
[src]
sum
7/2
$$\frac{7}{2}$$
=
7/2
$$\frac{7}{2}$$
product
7/2
$$\frac{7}{2}$$
=
7/2
$$\frac{7}{2}$$
7/2
The graph