Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 8x-15=-12+5x
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Equation x^2-x-7=0
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Equation 141*10^(-6)*x*3*sqrt(2)=sqrt((1-19881*10^(-12)*x^2)^2+9)
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Equation x^3-6*x^2+x-6=0
- Express {x} in terms of y where:
- -7*x+5*y=1
- -18*x+15*y=-14
- 20*x+16*y=3
- 12*x-17*y=19
- Derivative of:
- x-2
- The double integral of:
- x-2
- Graphing y =:
- x-2
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Identical expressions
- five x- six (5+ two x)=x-2
- 5x minus 6(5 plus 2x) equally x minus 2
- five x minus six (5 plus two x) equally x minus 2
- 5x-65+2x=x-2
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Similar expressions
- 5x+6(5+2x)=x-2
- 5x-6(5+2x)=x+2
- 5x-6(5-2x)=x-2
5x-6(5+2x)=x-2 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
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$- 7 x = x + 28$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-8\right) x = 28$$
Divide both parts of the equation by -8
We get the answer: x = -7/2
5*x-6*(5+2*x) = x-2
Expand brackets in the left part
5*x-6*5-6*2*x = x-2
Looking for similar summands in the left part:
-30 - 7*x = x-2
Move free summands (without x)
from left part to right part, we given:
$$- 7 x = x + 28$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-8\right) x = 28$$
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