Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- -18*x-1*y=-11
- 7*x-2*y=20
- -1*x-20*y=-17
- -2*x-14*y=7
- Equation:
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Equation 2x=18-x
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Equation x^4=(2*x-3)^2
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Equation 9*x^2=54*x
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Equation cos(x)+sin(x)=0
- Sum of series:
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20
- Limit of the function:
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20
- Integral of d{x}:
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20
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Identical expressions
- seven *x- two *y= twenty
- 7 multiply by x minus 2 multiply by y equally 20
- seven multiply by x minus two multiply by y equally twenty
- 7x-2y=20
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Similar expressions
- 7*x+2*y=20
Express x in terms of y where 7*x-2*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:
$$7 x = 2 y + 20$$
Divide both parts of the equation by 7
We get the answer: x = 20/7 + 2*y/7
7*x-2*y = 20
Looking for similar summands in the left part:
-2*y + 7*x = 20
Move the summands with the other variables
from left part to right part, we given:
$$7 x = 2 y + 20$$
Divide both parts of the equation by 7
x = 20 + 2*y / (7)
We get the answer: x = 20/7 + 2*y/7
Rapid solution
[src]
20 2*re(y) 2*I*im(y)
x1 = -- + ------- + ---------
7 7 7
$$x_{1} = \frac{2 \operatorname{re}{\left(y\right)}}{7} + \frac{2 i \operatorname{im}{\left(y\right)}}{7} + \frac{20}{7}$$
x1 = 2*re(y)/7 + 2*i*im(y)/7 + 20/7