Mister Exam
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Identical expressions
- thirteen *x- fifteen *y= nine
- 13 multiply by x minus 15 multiply by y equally 9
- thirteen multiply by x minus fifteen multiply by y equally nine
- 13x-15y=9
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Similar expressions
- 13*x+15*y=9
Express x in terms of y where 13*x-15*y=9
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:
$$13 x = 15 y + 9$$
Divide both parts of the equation by 13
We get the answer: x = 9/13 + 15*y/13
13*x-15*y = 9
Looking for similar summands in the left part:
-15*y + 13*x = 9
Move the summands with the other variables
from left part to right part, we given:
$$13 x = 15 y + 9$$
Divide both parts of the equation by 13
x = 9 + 15*y / (13)
We get the answer: x = 9/13 + 15*y/13
Rapid solution
[src]
9 15*re(y) 15*I*im(y)
x1 = -- + -------- + ----------
13 13 13
$$x_{1} = \frac{15 \operatorname{re}{\left(y\right)}}{13} + \frac{15 i \operatorname{im}{\left(y\right)}}{13} + \frac{9}{13}$$
x1 = 15*re(y)/13 + 15*i*im(y)/13 + 9/13