Mister Exam
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How to use it?
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- Equation:
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Equation (x+7)*(x-1)=0
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Equation x/3+x/4=-21
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Equation sin(x)=0
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Equation x^3-9*x=0
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Identical expressions
- seven *x- five *y= eight
- 7 multiply by x minus 5 multiply by y equally 8
- seven multiply by x minus five multiply by y equally eight
- 7x-5y=8
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Similar expressions
- 7*x+5*y=8
Express x in terms of y where 7*x-5*y=8
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Looking for similar summands in the left part:
Move the summands with the other variables
from left part to right part, we given:
$$7 x = 5 y + 8$$
Divide both parts of the equation by 7
We get the answer: x = 8/7 + 5*y/7
7*x-5*y = 8
Looking for similar summands in the left part:
-5*y + 7*x = 8
Move the summands with the other variables
from left part to right part, we given:
$$7 x = 5 y + 8$$
Divide both parts of the equation by 7
x = 8 + 5*y / (7)
We get the answer: x = 8/7 + 5*y/7
Rapid solution
[src]
8 5*re(y) 5*I*im(y)
x1 = - + ------- + ---------
7 7 7
$$x_{1} = \frac{5 \operatorname{re}{\left(y\right)}}{7} + \frac{5 i \operatorname{im}{\left(y\right)}}{7} + \frac{8}{7}$$
x1 = 5*re(y)/7 + 5*i*im(y)/7 + 8/7