Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- 18*x+12*y=18
- -11*x-3*y=14
- -17*x+2*y=-4
- -4*x-8*y=-20
- Equation:
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Equation (x-4)^2-x^2=0
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Equation x^2+3x=4
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Equation x*(x^2+8*x+16)=5*(x+4)
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Equation -x^2+4x+3=x^2-x-(1+2x^2)
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Identical expressions
- - four *x- eight *y=- twenty
- minus 4 multiply by x minus 8 multiply by y equally minus 20
- minus four multiply by x minus eight multiply by y equally minus twenty
- -4x-8y=-20
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Similar expressions
- 4*x-8*y=-20
- -4*x+8*y=-20
- -4*x-8*y=+20
Express x in terms of y where -4*x-8*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:
$$- 4 x = 8 y - 20$$
Divide both parts of the equation by -4
We get the answer: x = 5 - 2*y
-4*x-8*y = -20
Looking for similar summands in the left part:
-8*y - 4*x = -20
Move the summands with the other variables
from left part to right part, we given:
$$- 4 x = 8 y - 20$$
Divide both parts of the equation by -4
x = -20 + 8*y / (-4)
We get the answer: x = 5 - 2*y
Rapid solution
[src]
x1 = 5 - 2*re(y) - 2*I*im(y)
$$x_{1} = - 2 \operatorname{re}{\left(y\right)} - 2 i \operatorname{im}{\left(y\right)} + 5$$
x1 = -2*re(y) - 2*i*im(y) + 5