Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- -8*x-2*y=-11
- 19*x-20*y=-7
- -3*x+1*y=3
- -5*x-20*y=-3
- Equation:
- Equation (a-2)(b+5)=(a-2)b+(a-2)5
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Equation x^2-x-7=0
- Equation (x^2+a)/x+x/(x^2+a)=-5/2
-
Equation x^2-6x+13=0
- Integral of d{x}:
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-7
- Derivative of:
- -7
- Canonical form:
- -7
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Identical expressions
- nineteen *x- twenty *y=- seven
- 19 multiply by x minus 20 multiply by y equally minus 7
- nineteen multiply by x minus twenty multiply by y equally minus seven
- 19x-20y=-7
-
Similar expressions
- 19*x-20*y=+7
- 19*x+20*y=-7
Express x in terms of y where 19*x-20*y=-7
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:
$$19 x = 20 y - 7$$
Divide both parts of the equation by 19
We get the answer: x = -7/19 + 20*y/19
19*x-20*y = -7
Looking for similar summands in the left part:
-20*y + 19*x = -7
Move the summands with the other variables
from left part to right part, we given:
$$19 x = 20 y - 7$$
Divide both parts of the equation by 19
x = -7 + 20*y / (19)
We get the answer: x = -7/19 + 20*y/19
Rapid solution
[src]
7 20*re(y) 20*I*im(y)
x1 = - -- + -------- + ----------
19 19 19
$$x_{1} = \frac{20 \operatorname{re}{\left(y\right)}}{19} + \frac{20 i \operatorname{im}{\left(y\right)}}{19} - \frac{7}{19}$$
x1 = 20*re(y)/19 + 20*i*im(y)/19 - 7/19