Mister Exam
Other calculators
-
How to use it?
- Express {x} in terms of y where:
- 8*x-9*y=-1
- -6*x+11*y=-5
- -3*x-19*y=-9
- 8*x-19*y=16
- Equation:
-
Equation x^3=3
-
Equation (x+3)^3=9*(x+3)
-
Equation (x-1)*(x+1)=0
-
Equation -2x^2+x+7=-x^2+5x+(-2-x^2)
-
Identical expressions
- - thirteen *x- fifteen *y= nine
- minus 13 multiply by x minus 15 multiply by y equally 9
- minus thirteen multiply by x minus fifteen multiply by y equally nine
- -13x-15y=9
-
Similar expressions
- 13*x-15*y=9
- -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