Mister Exam
Other calculators
-
How to use it?
- Equation:
-
Equation -15x=45
-
Equation x^4=16
-
Equation 3/5*x=1
-
Equation x^3-6x^2+11x-6=0
- Express {x} in terms of y where:
- 18*x+17*y=-14
- -1*x-6*y=18
- 16*x-17*y=-15
- -4*x-4*y=19
- Graphing y =:
- -3*x+9
-
Identical expressions
- - nine - two *(five -x)=- three *x+ nine
- minus 9 minus 2 multiply by (5 minus x) equally minus 3 multiply by x plus 9
- minus nine minus two multiply by (five minus x) equally minus three multiply by x plus nine
- -9-2(5-x)=-3x+9
- -9-25-x=-3x+9
-
Similar expressions
- 9-2*(5-x)=-3*x+9
- x^3-3x^2-3x+9=0
- 12+4(x-3)-2=(5-3x)+9
- -9-2*(5+x)=-3*x+9
- -9+2*(5-x)=-3*x+9
- x^2+2(a-3)x+9-2a=0
- -9-2*(5-x)=-3*x-9
- -9-2*(5-x)=+3*x+9
- (x+5)(-3x+9)=0
-9-2*(5-x)=-3*x+9 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:
$$2 x = 28 - 3 x$$
Move the summands with the unknown x
from the right part to the left part:
$$5 x = 28$$
Divide both parts of the equation by 5
We get the answer: x = 28/5
-9-2*(5-x) = -3*x+9
Expand brackets in the left part
-9-2*5+2*x = -3*x+9
Looking for similar summands in the left part:
-19 + 2*x = -3*x+9
Move free summands (without x)
from left part to right part, we given:
$$2 x = 28 - 3 x$$
Move the summands with the unknown x
from the right part to the left part:
$$5 x = 28$$
Divide both parts of the equation by 5
x = 28 / (5)
We get the answer: x = 28/5
Sum and product of roots
[src]
sum
28/5
$$\frac{28}{5}$$
=
28/5
$$\frac{28}{5}$$
product
28/5
$$\frac{28}{5}$$
=
28/5
$$\frac{28}{5}$$
28/5