Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- -2*x-14*y=7
- 7*x+13*y=-13
- 7*x+19*y=12
- -11*x-14*y=-3
- Equation:
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Equation (-5*x-3)*(2*x-1)=0
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Equation x^2-8x+15=0
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Equation x^2+x-4=0
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Equation x^2=49
- Sum of series:
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-13
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Identical expressions
- seven *x+ thirteen *y=- thirteen
- 7 multiply by x plus 13 multiply by y equally minus 13
- seven multiply by x plus thirteen multiply by y equally minus thirteen
- 7x+13y=-13
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Similar expressions
- 7*x+13*y=+13
- 7*x-13*y=-13
Express x in terms of y where 7*x+13*y=-13
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:
$$7 x = - 13 y - 13$$
Divide both parts of the equation by 7
We get the answer: x = -13/7 - 13*y/7
7*x+13*y = -13
Looking for similar summands in the left part:
7*x + 13*y = -13
Move the summands with the other variables
from left part to right part, we given:
$$7 x = - 13 y - 13$$
Divide both parts of the equation by 7
x = -13 - 13*y / (7)
We get the answer: x = -13/7 - 13*y/7
Rapid solution
[src]
13 13*re(y) 13*I*im(y)
x1 = - -- - -------- - ----------
7 7 7
$$x_{1} = - \frac{13 \operatorname{re}{\left(y\right)}}{7} - \frac{13 i \operatorname{im}{\left(y\right)}}{7} - \frac{13}{7}$$
x1 = -13*re(y)/7 - 13*i*im(y)/7 - 13/7