Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation -20*(x-13)=-220
-
Equation x-x/12=55/12
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Equation 3^x=81
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Equation 12-x^2=11
- Express {x} in terms of y where:
- 18*x+19*y=7
- 16*x-15*y=4
- 1*x+6*y=6
- 20*x+9*y=17
- 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
- (x+1)(x+4)(x+7)(x+10)(x+13)(x+16)(x+19)(x+22)(x+25)(x+28)=155
- -2*(5-x)=4x-7
- (5+x)^1/3-2(5-x)^1/3=(25-x^2)^1/6
- 2x-4(x+7)=3(2-x)
- -2*(5+x)=4x+7
- 2*(5-x)=4x+7
- x-2(5-x)=5
-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