Mister Exam
Other calculators
-
How to use it?
- Equation:
-
Equation |x|=-2
- Equation x+y-3=0
-
Equation 2^x=6-x
-
Equation 80-x=9*5
- Express {x} in terms of y where:
- 7*x-2*y=18
- -1*x-6*y=18
- 6*x-19*y=-18
- 10*x-5*y=3
-
Identical expressions
- - fifteen - three *(x- two)= eighteen +x
- minus 15 minus 3 multiply by (x minus 2) equally 18 plus x
- minus fifteen minus three multiply by (x minus two) equally eighteen plus x
- -15-3(x-2)=18+x
- -15-3x-2=18+x
-
Similar expressions
- -15+3*(x-2)=18+x
- -15-3*(x-2)=18-x
- 15-3*(x-2)=18+x
- -15-3*(x+2)=18+x
-15-3*(x-2)=18+x equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Expand brackets in the left part
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$- 3 x = x + 27$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-4\right) x = 27$$
Divide both parts of the equation by -4
We get the answer: x = -27/4
-15-3*(x-2) = 18+x
Expand brackets in the left part
-15-3*x+3*2 = 18+x
Looking for similar summands in the left part:
-9 - 3*x = 18+x
Move free summands (without x)
from left part to right part, we given:
$$- 3 x = x + 27$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-4\right) x = 27$$
Divide both parts of the equation by -4
x = 27 / (-4)
We get the answer: x = -27/4
Sum and product of roots
[src]
sum
-27/4
$$- \frac{27}{4}$$
=
-27/4
$$- \frac{27}{4}$$
product
-27/4
$$- \frac{27}{4}$$
=
-27/4
$$- \frac{27}{4}$$
-27/4