Mister Exam
Other calculators
-
How to use it?
- Express {x} in terms of y where:
- 4*x+8*y=7
- -14*x+5*y=3
- 13*x-18*y=-17
- 4*x+18*y=-7
- Equation:
-
Equation x/4+13=x+1
-
Equation 4(x-8)=-5
-
Equation 5(x-2)^2=-6x-44
-
Equation 2^x=5
- Sum of series:
-
20
- Limit of the function:
-
20
- Integral of d{x}:
-
20
-
Identical expressions
- seven *x+ six *y= twenty
- 7 multiply by x plus 6 multiply by y equally 20
- seven multiply by x plus six multiply by y equally twenty
- 7x+6y=20
-
Similar expressions
- 7*x-6*y=20
Express x in terms of y where 7*x+6*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:
$$7 x = 20 - 6 y$$
Divide both parts of the equation by 7
We get the answer: x = 20/7 - 6*y/7
7*x+6*y = 20
Looking for similar summands in the left part:
6*y + 7*x = 20
Move the summands with the other variables
from left part to right part, we given:
$$7 x = 20 - 6 y$$
Divide both parts of the equation by 7
x = 20 - 6*y / (7)
We get the answer: x = 20/7 - 6*y/7
Rapid solution
[src]
20 6*re(y) 6*I*im(y)
x1 = -- - ------- - ---------
7 7 7
$$x_{1} = - \frac{6 \operatorname{re}{\left(y\right)}}{7} - \frac{6 i \operatorname{im}{\left(y\right)}}{7} + \frac{20}{7}$$
x1 = -6*re(y)/7 - 6*i*im(y)/7 + 20/7