Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation -x^2-4*x-3=0
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Equation cos(x)=-3
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Equation sin(-x)=0
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Equation (x+3)^3=81*(x+3)
- Express {x} in terms of y where:
- 2*x-8*y=16
- -15*x+9*y=18
- 19*x-1*y=9
- -1*x-19*y=-7
- Integral of d{x}:
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12
- Canonical form:
- 12
- Derivative of:
- 12
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Identical expressions
- 3x-(x- eight)= twelve
- 3x minus (x minus 8) equally 12
- 3x minus (x minus eight) equally twelve
- 3x-x-8=12
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Similar expressions
- 3x+(x-8)=12
- 3x-(x+8)=12
- 3x-x-8=3
3x-(x-8)=12 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:
$$2 x = 4$$
Divide both parts of the equation by 2
We get the answer: x = 2
3*x-(x-8) = 12
Expand brackets in the left part
3*x-x+8 = 12
Looking for similar summands in the left part:
8 + 2*x = 12
Move free summands (without x)
from left part to right part, we given:
$$2 x = 4$$
Divide both parts of the equation by 2
x = 4 / (2)
We get the answer: x = 2