Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation -20+2x=18
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Equation 2*x^2+5*x-12=0
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Equation 5*x^2=35*x
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Equation 5=12-5(4x-1)
- Express {x} in terms of y where:
- 15*x+1*y=19
- 8*x-16*y=14
- 15*x-3*y=19
- 11*x+8*y=-16
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Identical expressions
- five = twelve - five (4x- one)
- 5 equally 12 minus 5(4x minus 1)
- five equally twelve minus five (4x minus one)
- 5=12-54x-1
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Similar expressions
- 5=12-5(4x+1)
- 5=12+5(4x-1)
5=12-5(4x-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:
$$0 = 12 - 20 x$$
Move the summands with the unknown x
from the right part to the left part:
$$20 x = 12$$
Divide both parts of the equation by 20
We get the answer: x = 3/5
5 = 12-5*(4*x-1)
Expand brackets in the right part
5 = 12-5*4*x+5*1
Looking for similar summands in the right part:
5 = 17 - 20*x
Move free summands (without x)
from left part to right part, we given:
$$0 = 12 - 20 x$$
Move the summands with the unknown x
from the right part to the left part:
$$20 x = 12$$
Divide both parts of the equation by 20
x = 12 / (20)
We get the answer: x = 3/5
Sum and product of roots
[src]
sum
3/5
$$\frac{3}{5}$$
=
3/5
$$\frac{3}{5}$$
product
3/5
$$\frac{3}{5}$$
=
3/5
$$\frac{3}{5}$$
3/5
The graph