Mister Exam

Other calculators

x+y=7 equation

The teacher will be very surprised to see your correct solution 😉

v

Numerical solution:

Do search numerical solution at [, ]

The solution

You have entered [src] 
x + y = 7
x+y=7x + y = 7
Simplify
Detail solution
Given the linear equation:
x+y = 7

Looking for similar summands in the left part:
x + y = 7

Move the summands with the other variables
from left part to right part, we given:
x=7−yx = 7 - y
We get the answer: x = 7 - y
The graph
Rapid solution [src] 
x1 = 7 - re(y) - I*im(y)
x1=−re⁡(y)−iim⁡(y)+7x_{1} = - \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7 
x1 = -re(y) - i*im(y) + 7
Sum and product of roots [src] 
sum
7 - re(y) - I*im(y)
−re⁡(y)−iim⁡(y)+7- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7 
=
7 - re(y) - I*im(y)
−re⁡(y)−iim⁡(y)+7- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7 
product
7 - re(y) - I*im(y)
−re⁡(y)−iim⁡(y)+7- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7 
=
7 - re(y) - I*im(y)
−re⁡(y)−iim⁡(y)+7- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7 
7 - re(y) - i*im(y)
    © Mister Exam – Calculator