Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 81*x^3+18*x^2+x=0
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Equation 6=8-5(7x-1)
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Equation 3x=28-x
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Equation 3x=2
- Express {x} in terms of y where:
- -13*x-7*y=16
- -16*x+10*y=-11
- -2*x-15*y=-1
- -14*x+5*y=-1
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Identical expressions
- six = eight - five (7x- one)
- 6 equally 8 minus 5(7x minus 1)
- six equally eight minus five (7x minus one)
- 6=8-57x-1
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Similar expressions
- 6=8-5(7x+1)
- 6=8+5(7x-1)
6=8-5(7x-1) 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 free summands (without x)
from left part to right part, we given:
$$0 = 7 - 35 x$$
Move the summands with the unknown x
from the right part to the left part:
$$35 x = 7$$
Divide both parts of the equation by 35
We get the answer: x = 1/5
6 = 8-5*(7*x-1)
Expand brackets in the right part
6 = 8-5*7*x+5*1
Looking for similar summands in the right part:
6 = 13 - 35*x
Move free summands (without x)
from left part to right part, we given:
$$0 = 7 - 35 x$$
Move the summands with the unknown x
from the right part to the left part:
$$35 x = 7$$
Divide both parts of the equation by 35
x = 7 / (35)
We get the answer: x = 1/5
Sum and product of roots
[src]
sum
1/5
$$\frac{1}{5}$$
=
1/5
$$\frac{1}{5}$$
product
1/5
$$\frac{1}{5}$$
=
1/5
$$\frac{1}{5}$$
1/5
The graph