Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- 11*x+3*y=-16
- -2*x+13*y=-6
- 20*x-3*y=3
- 18*x-7*y=-4
- Equation:
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Equation -x=25
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Equation x^3=5
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Equation 2x=4
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Equation x^2=x+72
- Derivative of:
- -4
- Integral of d{x}:
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-4
- Limit of the function:
- -4
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Identical expressions
- eighteen *x- seven *y=- four
- 18 multiply by x minus 7 multiply by y equally minus 4
- eighteen multiply by x minus seven multiply by y equally minus four
- 18x-7y=-4
-
Similar expressions
- 18*x+7*y=-4
- 18*x-7*y=+4
Express x in terms of y where 18*x-7*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:
$$18 x = 7 y - 4$$
Divide both parts of the equation by 18
We get the answer: x = -2/9 + 7*y/18
18*x-7*y = -4
Looking for similar summands in the left part:
-7*y + 18*x = -4
Move the summands with the other variables
from left part to right part, we given:
$$18 x = 7 y - 4$$
Divide both parts of the equation by 18
x = -4 + 7*y / (18)
We get the answer: x = -2/9 + 7*y/18
Rapid solution
[src]
2 7*re(y) 7*I*im(y)
x1 = - - + ------- + ---------
9 18 18
$$x_{1} = \frac{7 \operatorname{re}{\left(y\right)}}{18} + \frac{7 i \operatorname{im}{\left(y\right)}}{18} - \frac{2}{9}$$
x1 = 7*re(y)/18 + 7*i*im(y)/18 - 2/9