Mister Exam
Other calculators
-
How to use it?
- Express {x} in terms of y where:
- -19*x-20*y=-4
- 13*x-18*y=-17
- 9*x-1*y=17
- 15*x+7*y=2
- Equation:
-
Equation cos(x)=5
-
Equation sin(x/3)=1/2
-
Equation -8x-17=3x-105
-
Equation x^2-8x+12=0
- Integral of d{x}:
-
-4
- Derivative of:
- -4
- Limit of the function:
- -4
-
Identical expressions
- - nineteen *x- twenty *y=- four
- minus 19 multiply by x minus 20 multiply by y equally minus 4
- minus nineteen multiply by x minus twenty multiply by y equally minus four
- -19x-20y=-4
-
Similar expressions
- -19*x-20*y=+4
- 19*x-20*y=-4
- -19*x+20*y=-4
Express x in terms of y where -19*x-20*y=-4
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:
$$- 19 x = 20 y - 4$$
Divide both parts of the equation by -19
We get the answer: x = 4/19 - 20*y/19
-19*x-20*y = -4
Looking for similar summands in the left part:
-20*y - 19*x = -4
Move the summands with the other variables
from left part to right part, we given:
$$- 19 x = 20 y - 4$$
Divide both parts of the equation by -19
x = -4 + 20*y / (-19)
We get the answer: x = 4/19 - 20*y/19
Rapid solution
[src]
4 20*re(y) 20*I*im(y)
x1 = -- - -------- - ----------
19 19 19
$$x_{1} = - \frac{20 \operatorname{re}{\left(y\right)}}{19} - \frac{20 i \operatorname{im}{\left(y\right)}}{19} + \frac{4}{19}$$
x1 = -20*re(y)/19 - 20*i*im(y)/19 + 4/19