Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 3*x^2-8*x-3=0
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Equation 3*x=5
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Equation x^2-11*x+10=0
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Equation 4-x=1
- Express {x} in terms of y where:
- -17*x-11*y=16
- -9*x+8*y=-11
- 15*x-20*y=4
- -3*x-9*y=16
- Integral of d{x}:
- x/9
- Graphing y =:
- x/9
- Limit of the function:
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x/9
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Identical expressions
- four -(x/ seven)=x/ nine
- 4 minus (x divide by 7) equally x divide by 9
- four minus (x divide by seven) equally x divide by nine
- 4-x/7=x/9
- 4-(x divide by 7)=x divide by 9
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Similar expressions
- (x/11,3)+(664-x)/7,3=80
- x^2/4-x/7+y^2/2-12=-2
- (8*x-1)/5-1=(50-2*x)/9+(3*x+3)/4
- 4+(x/7)=x/9
- x/5.6=(6.4-x)/7.2
- x/11.35+(664-x)/7,3=80
- (3x-1)/6-(1x)/3=(5-x)/9
4-(x/7)=x/9 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
Move free summands (without x)
from left part to right part, we given:
$$- \frac{x}{7} = \frac{x}{9} - 4$$
Move the summands with the unknown x
from the right part to the left part:
$$\frac{\left(-16\right) x}{63} = -4$$
Divide both parts of the equation by -16/63
We get the answer: x = 63/4
4-(x/7) = x/9
Expand brackets in the left part
4-x/7 = x/9
Move free summands (without x)
from left part to right part, we given:
$$- \frac{x}{7} = \frac{x}{9} - 4$$
Move the summands with the unknown x
from the right part to the left part:
$$\frac{\left(-16\right) x}{63} = -4$$
Divide both parts of the equation by -16/63
x = -4 / (-16/63)
We get the answer: x = 63/4
Sum and product of roots
[src]
sum
63/4
$$\frac{63}{4}$$
=
63/4
$$\frac{63}{4}$$
product
63/4
$$\frac{63}{4}$$
=
63/4
$$\frac{63}{4}$$
63/4
The graph