Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- -14*x+4*y=-16
- -13*x-10*y=5
- 9*x-1*y=17
- 7*x+6*y=20
- Equation:
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Equation x^2+4*x+4=0
- Equation x^2+81=0
-
Equation 6*3+x=72
-
Equation x^3+x^2=0
- Derivative of:
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18
- Sum of series:
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18
- The double integral of:
- 18
-
Identical expressions
- - seven *x+ fifteen *y= eighteen
- minus 7 multiply by x plus 15 multiply by y equally 18
- minus seven multiply by x plus fifteen multiply by y equally eighteen
- -7x+15y=18
-
Similar expressions
- -7*x-15*y=18
- 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