Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- 18*x-20*y=-7
- 18*x-12*y=-20
- -13*x+7*y=11
- -19*x-14*y=-8
- Equation:
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Equation x^2+9=(x+9)^2
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Equation cos(x)=-1
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Equation (x-1)/(5-x)=2/9
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Equation 2*x^2-x-1=x^2-5*x-(-1-x^2)
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Identical expressions
- four *x+ eighteen *y=- fourteen
- 4 multiply by x plus 18 multiply by y equally minus 14
- four multiply by x plus eighteen multiply by y equally minus fourteen
- 4x+18y=-14
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Similar expressions
- 4*x+18*y=+14
- 4*x-18*y=-14
Express x in terms of y where 4*x+18*y=-14
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:
$$4 x = - 18 y - 14$$
Divide both parts of the equation by 4
We get the answer: x = -7/2 - 9*y/2
4*x+18*y = -14
Looking for similar summands in the left part:
4*x + 18*y = -14
Move the summands with the other variables
from left part to right part, we given:
$$4 x = - 18 y - 14$$
Divide both parts of the equation by 4
x = -14 - 18*y / (4)
We get the answer: x = -7/2 - 9*y/2
Rapid solution
[src]
7 9*re(y) 9*I*im(y)
x1 = - - - ------- - ---------
2 2 2
$$x_{1} = - \frac{9 \operatorname{re}{\left(y\right)}}{2} - \frac{9 i \operatorname{im}{\left(y\right)}}{2} - \frac{7}{2}$$
x1 = -9*re(y)/2 - 9*i*im(y)/2 - 7/2