Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^2-21=4x
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Equation x^2-13*x=0
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Equation 6^x=1
- Equation x^3+6*x^2-x-6=0
- Express {x} in terms of y where:
- 19*x-7*y=2
- -3*x+3*y=10
- 3*x-15*y=-9
- 6*x-13*y=-19
- Limit of the function:
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21
- Sum of series:
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21
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Identical expressions
- 3x-(x+ seventeen)= twenty-one
- 3x minus (x plus 17) equally 21
- 3x minus (x plus seventeen) equally twenty minus one
- 3x-x+17=21
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Similar expressions
- 3x-(x-17)=21
- 3x+(x+17)=21
- 2(1-3x)=13
3x-(x+17)=21 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:
$$2 x = 38$$
Divide both parts of the equation by 2
We get the answer: x = 19
3*x-(x+17) = 21
Expand brackets in the left part
3*x-x-17 = 21
Looking for similar summands in the left part:
-17 + 2*x = 21
Move free summands (without x)
from left part to right part, we given:
$$2 x = 38$$
Divide both parts of the equation by 2
x = 38 / (2)
We get the answer: x = 19