Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- 7*x-2*y=18
- 18*x+19*y=7
- 8*x-13*y=-12
- -10*x+13*y=5
- Equation:
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Equation 2*x^2+5*x-12=0
-
Equation x^2+2x-8=0
-
Equation 6x+2=-1
- Equation (x^2-25)^2+(x^2+3x-10)^2=0
- Derivative of:
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18
- Sum of series:
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18
- The double integral of:
- 18
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Identical expressions
- seven *x+ fifteen *y= eighteen
- 7 multiply by x plus 15 multiply by y equally 18
- seven multiply by x plus fifteen multiply by y equally eighteen
- 7x+15y=18
-
Similar expressions
- 7*x-15*y=18
Express x in terms of y where 7*x+15*y=18
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:
$$7 x = 18 - 15 y$$
Divide both parts of the equation by 7
We get the answer: x = 18/7 - 15*y/7
7*x+15*y = 18
Looking for similar summands in the left part:
7*x + 15*y = 18
Move the summands with the other variables
from left part to right part, we given:
$$7 x = 18 - 15 y$$
Divide both parts of the equation by 7
x = 18 - 15*y / (7)
We get the answer: x = 18/7 - 15*y/7
Rapid solution
[src]
18 15*re(y) 15*I*im(y)
x1 = -- - -------- - ----------
7 7 7
$$x_{1} = - \frac{15 \operatorname{re}{\left(y\right)}}{7} - \frac{15 i \operatorname{im}{\left(y\right)}}{7} + \frac{18}{7}$$
x1 = -15*re(y)/7 - 15*i*im(y)/7 + 18/7