Mister Exam
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- Equation:
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Equation x+5=12
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Equation (x^2+3)/(x^2+1)=2
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Equation 4*x-8=x+1
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Equation x^2+20*x+100=0
- Express {x} in terms of y where:
- 19*x+2*y=-8
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Identical expressions
- zero ,4x+ nine / eleven × zero ,4x- fifteen =x
- 0,4x plus 9 divide by 11×0,4x minus 15 equally x
- zero ,4x plus nine divide by eleven × zero ,4x minus fifteen equally x
- 0,4x+9 divide by 11×0,4x-15=x
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Similar expressions
- 0,4x-9/11×0,4x-15=x
- 0,4x+9/11×0,4x+15=x
0,4x+9/11×0,4x-15=x equation
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The solution
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2*x 9*2 --- + ----*x - 15 = x 5 11*5
$$\left(\frac{2 \cdot 9}{5 \cdot 11} x + \frac{2 x}{5}\right) - 15 = x$$
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:
$$\frac{8 x}{11} = x + 15$$
Move the summands with the unknown x
from the right part to the left part:
$$\frac{\left(-3\right) x}{11} = 15$$
Divide both parts of the equation by -3/11
We get the answer: x = -55
(2/5)*x+9/11*(2/5)*x-15 = x
Expand brackets in the left part
2/5x+9/11*2/5x-15 = x
Looking for similar summands in the left part:
-15 + 8*x/11 = x
Move free summands (without x)
from left part to right part, we given:
$$\frac{8 x}{11} = x + 15$$
Move the summands with the unknown x
from the right part to the left part:
$$\frac{\left(-3\right) x}{11} = 15$$
Divide both parts of the equation by -3/11
x = 15 / (-3/11)
We get the answer: x = -55