Mister Exam
Other calculators
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How to use it?
- Equation:
- Equation a*x=b
-
Equation 2-3(2+3x)=14
-
Equation x^2-x+8=0
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Equation 2^x=7
- Express {x} in terms of y where:
- 8*x-4*y=10
- -17*x-5*y=-20
- 2*x+19*y=-7
- -4*x+7*y=-16
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Identical expressions
- seven -(2x+ three)= nine
- 7 minus (2x plus 3) equally 9
- seven minus (2x plus three) equally nine
- 7-2x+3=9
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Similar expressions
- -2/7(-2x+3/4)=-1/7x-6/7
- 5*x+0,7-2*x+3,8=0
- 7-(2x-3)=9
- 7+(2x+3)=9
7-(2x+3)=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:
$$- 2 x = 5$$
Divide both parts of the equation by -2
We get the answer: x = -5/2
7-(2*x+3) = 9
Expand brackets in the left part
7-2*x-3 = 9
Looking for similar summands in the left part:
4 - 2*x = 9
Move free summands (without x)
from left part to right part, we given:
$$- 2 x = 5$$
Divide both parts of the equation by -2
x = 5 / (-2)
We get the answer: x = -5/2
Sum and product of roots
[src]
sum
-5/2
$$- \frac{5}{2}$$
=
-5/2
$$- \frac{5}{2}$$
product
-5/2
$$- \frac{5}{2}$$
=
-5/2
$$- \frac{5}{2}$$
-5/2
The graph