Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 7*x=0
-
Equation 3x-2=x+4
-
Equation tan(x)=7
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Equation (x-3)(x^2-2x+1)=3(x-1)
- Express {x} in terms of y where:
- 18*x-10*y=-9
- 18*x-12*y=-9
- 12*x+11*y=20
- 19*x-12*y=-9
-
Identical expressions
- seven -9x=- four (4x- five)
- 7 minus 9x equally minus 4(4x minus 5)
- seven minus 9x equally minus four (4x minus five)
- 7-9x=-44x-5
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Similar expressions
- 7+9x=-4(4x-5)
- 3*x^2-3*x-6*x-12-27-9*x=0
- 5x-2=8(4x-7)-9x
- 7-9x=-4(4x+5)
- 7-9x=+4(4x-5)
- (2^(3/2))*(27-9*x)=0
7-9x=-4(4x-5) 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
Move free summands (without x)
from left part to right part, we given:
$$- 9 x = 13 - 16 x$$
Move the summands with the unknown x
from the right part to the left part:
$$7 x = 13$$
Divide both parts of the equation by 7
We get the answer: x = 13/7
7-9*x = -4*(4*x-5)
Expand brackets in the right part
7-9*x = -4*4*x+4*5
Move free summands (without x)
from left part to right part, we given:
$$- 9 x = 13 - 16 x$$
Move the summands with the unknown x
from the right part to the left part:
$$7 x = 13$$
Divide both parts of the equation by 7
x = 13 / (7)
We get the answer: x = 13/7
Sum and product of roots
[src]
sum
13/7
$$\frac{13}{7}$$
=
13/7
$$\frac{13}{7}$$
product
13/7
$$\frac{13}{7}$$
=
13/7
$$\frac{13}{7}$$
13/7
The graph