Mister Exam
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Identical expressions
- thirteen *x+ one *y=- twenty
- 13 multiply by x plus 1 multiply by y equally minus 20
- thirteen multiply by x plus one multiply by y equally minus twenty
- 13x+1y=-20
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Similar expressions
- 13*x+1*y=+20
- 13*x-1*y=-20
Express x in terms of y where 13*x+1*y=-20
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:
$$13 x = - y - 20$$
Divide both parts of the equation by 13
We get the answer: x = -20/13 - y/13
13*x+1*y = -20
Looking for similar summands in the left part:
y + 13*x = -20
Move the summands with the other variables
from left part to right part, we given:
$$13 x = - y - 20$$
Divide both parts of the equation by 13
x = -20 - y / (13)
We get the answer: x = -20/13 - y/13
Rapid solution
[src]
20 re(y) I*im(y)
x1 = - -- - ----- - -------
13 13 13
$$x_{1} = - \frac{\operatorname{re}{\left(y\right)}}{13} - \frac{i \operatorname{im}{\left(y\right)}}{13} - \frac{20}{13}$$
x1 = -re(y)/13 - i*im(y)/13 - 20/13