Mister Exam
−15x−19=5x+81 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Move free summands (without x)
from left part to right part, we given:
$$- 15 x = 5 x + 100$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-20\right) x = 100$$
Divide both parts of the equation by -20
We get the answer: x = -5
-15*x-19 = 5*x+81
Move free summands (without x)
from left part to right part, we given:
$$- 15 x = 5 x + 100$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-20\right) x = 100$$
Divide both parts of the equation by -20
x = 100 / (-20)
We get the answer: x = -5