Mister Exam
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How to use it?
- Equation:
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Equation x^2+3*x+9=0
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Equation x^2+6x-2=0
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Equation 3*x^2-8*x-3=0
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Equation -2x-7=-4x
- Express {x} in terms of y where:
- -13*x-14*y=0
- -13*x+15*y=1
- 11*x-6*y=-1
- -12*x-4*y=-17
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Identical expressions
- 5x+(3x- seven)= nine
- 5x plus (3x minus 7) equally 9
- 5x plus (3x minus seven) equally nine
- 5x+3x-7=9
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Similar expressions
- 5x+(3x+7)=9
- 5x-(3x-7)=9
5x+(3x-7)=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
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$8 x = 16$$
Divide both parts of the equation by 8
We get the answer: x = 2
5*x+(3*x-7) = 9
Expand brackets in the left part
5*x+3*x-7 = 9
Looking for similar summands in the left part:
-7 + 8*x = 9
Move free summands (without x)
from left part to right part, we given:
$$8 x = 16$$
Divide both parts of the equation by 8
x = 16 / (8)
We get the answer: x = 2
The graph