Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x+12=5
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Equation x^2+x=12
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Equation x^4=(x-56)^2
- Equation x-y+1=0
- Express {x} in terms of y where:
- 18*x+19*y=7
- 8*x-13*y=-12
- 1*x+6*y=6
- -6*x+1*y=-5
- Graphing y =:
- 4x+7
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Identical expressions
- - two *(five -x)=4x+ seven
- minus 2 multiply by (5 minus x) equally 4x plus 7
- minus two multiply by (five minus x) equally 4x plus seven
- -2(5-x)=4x+7
- -25-x=4x+7
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Similar expressions
- (4*x+7)/5+(3*x-2)/2=(5*x+62)/2
- -2*(5+x)=4x+7
- -2*(5-x)=4x-7
- x-2(5-x)=5
- 4*x+7=0
- 2*(5-x)=4x+7
- x^2-14*x+74=0
- (5+x)^1/3-2(5-x)^1/3=(25-x^2)^1/6
-2*(5-x)=4x+7 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
Move free summands (without x)
from left part to right part, we given:
$$2 x = 4 x + 17$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-2\right) x = 17$$
Divide both parts of the equation by -2
We get the answer: x = -17/2
-2*(5-x) = 4*x+7
Expand brackets in the left part
-2*5+2*x = 4*x+7
Move free summands (without x)
from left part to right part, we given:
$$2 x = 4 x + 17$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-2\right) x = 17$$
Divide both parts of the equation by -2
x = 17 / (-2)
We get the answer: x = -17/2
Sum and product of roots
[src]
sum
-17/2
$$- \frac{17}{2}$$
=
-17/2
$$- \frac{17}{2}$$
product
-17/2
$$- \frac{17}{2}$$
=
-17/2
$$- \frac{17}{2}$$
-17/2