Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 2x=18-x
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Equation x^4=(2*x-3)^2
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Equation 9*x^2=54*x
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Equation cos(x)+sin(x)=0
- Express {x} in terms of y where:
- -18*x-1*y=-11
- 7*x-2*y=20
- -1*x-20*y=-17
- 9*x+18*y=3
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Identical expressions
- 18x-7x= ten - three *(x+ four)
- 18x minus 7x equally 10 minus 3 multiply by (x plus 4)
- 18x minus 7x equally ten minus three multiply by (x plus four)
- 18x-7x=10-3(x+4)
- 18x-7x=10-3x+4
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Similar expressions
- 18x+7x=10-3*(x+4)
- 10-3(x+4)=14-5x
- 18x-7x=10+3*(x+4)
- 10-3(x+4)=24-5x
- 18x-7x=10-3*(x-4)
18x-7x=10-3*(x+4) 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 left part:
Looking for similar summands in the right part:
Move the summands with the unknown x
from the right part to the left part:
$$14 x = -2$$
Divide both parts of the equation by 14
We get the answer: x = -1/7
18*x-7*x = 10-3*(x+4)
Expand brackets in the right part
18*x-7*x = 10-3*x-3*4
Looking for similar summands in the left part:
11*x = 10-3*x-3*4
Looking for similar summands in the right part:
11*x = -2 - 3*x
Move the summands with the unknown x
from the right part to the left part:
$$14 x = -2$$
Divide both parts of the equation by 14
x = -2 / (14)
We get the answer: x = -1/7
Sum and product of roots
[src]
sum
-1/7
$$- \frac{1}{7}$$
=
-1/7
$$- \frac{1}{7}$$
product
-1/7
$$- \frac{1}{7}$$
=
-1/7
$$- \frac{1}{7}$$
-1/7