Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 15*x^2-4*x-3=0
-
Equation 7*x=6
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Equation x^3-x^2-6*x=0
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Equation (x+3)-17=-20
- Express {x} in terms of y where:
- 13*x-7*y=8
- -20*x-20*y=11
- -11*x-13*y=-1
- 18*x-6*y=15
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Identical expressions
- thirteen *x+ six = eight *x- fifteen
- 13 multiply by x plus 6 equally 8 multiply by x minus 15
- thirteen multiply by x plus six equally eight multiply by x minus fifteen
- 13x+6=8x-15
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Similar expressions
- 3x+5=8x-15
- 13*x-6=8*x-15
- (5-7x)+8x-(15-13x)=4x
- 5x^2−13x+6=0.
- 13x+6=10x-2
- 13*x+6=8*x+15
13*x+6=8*x-15 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Move free summands (without x)
from left part to right part, we given:
$$13 x = 8 x - 21$$
Move the summands with the unknown x
from the right part to the left part:
$$5 x = -21$$
Divide both parts of the equation by 5
We get the answer: x = -21/5
13*x+6 = 8*x-15
Move free summands (without x)
from left part to right part, we given:
$$13 x = 8 x - 21$$
Move the summands with the unknown x
from the right part to the left part:
$$5 x = -21$$
Divide both parts of the equation by 5
x = -21 / (5)
We get the answer: x = -21/5
Sum and product of roots
[src]
sum
-21/5
$$- \frac{21}{5}$$
=
-21/5
$$- \frac{21}{5}$$
product
-21/5
$$- \frac{21}{5}$$
=
-21/5
$$- \frac{21}{5}$$
-21/5