Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 4x-x^2=x^2-x+3
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Equation x^2-21=4x
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Equation 9*x^2-1=0
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Equation 2*sin(x)*cos(x)=0
- Express {x} in terms of y where:
- -1*x+1*y=-13
- -20*x-20*y=11
- 9*x-1*y=-10
- -19*x+20*y=-11
- Integral of d{x}:
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4x+3
- 4x+3
- Derivative of:
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4x+3
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Identical expressions
- 5x- seven (x- three)=4x+ three
- 5x minus 7(x minus 3) equally 4x plus 3
- 5x minus seven (x minus three) equally 4x plus three
- 5x-7x-3=4x+3
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Similar expressions
- 5x-7(x-3)=4x-3
- 5x-7(x+3)=4x+3
- ((8*x-5)/3)-((4*x+3)/4)+((2-9*x)/2)=0
- 1/6(x-4)(x+3)^2=0
- 5x+7(x-3)=4x+3
- 7x-4(x+3)=12
5x-7(x-3)=4x+3 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:
$$- 2 x = 4 x - 18$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-6\right) x = -18$$
Divide both parts of the equation by -6
We get the answer: x = 3
5*x-7*(x-3) = 4*x+3
Expand brackets in the left part
5*x-7*x+7*3 = 4*x+3
Looking for similar summands in the left part:
21 - 2*x = 4*x+3
Move free summands (without x)
from left part to right part, we given:
$$- 2 x = 4 x - 18$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-6\right) x = -18$$
Divide both parts of the equation by -6
x = -18 / (-6)
We get the answer: x = 3