Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 14/(x-3)=-7/9
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Equation x^4+2*x^2-8=0
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Equation 9x−9(x+1)=−2x
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Equation x^4+4=0
- Express {x} in terms of y where:
- -17*x+1*y=-11
- 1*x+4*y=20
- -18*x-2*y=9
- -20*x-14*y=5
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Identical expressions
- (7x- one)-(9x+ three)= five
- (7x minus 1) minus (9x plus 3) equally 5
- (7x minus one) minus (9x plus three) equally five
- 7x-1-9x+3=5
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Similar expressions
- (7x-1)+(9x+3)=5
- (7x+1)-(9x+3)=5
- (7x-1)-(9x-3)=5
(7x-1)-(9x+3)=5 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:
$$- 2 x = 9$$
Divide both parts of the equation by -2
We get the answer: x = -9/2
(7*x-1)-(9*x+3) = 5
Expand brackets in the left part
7*x-1-9*x-3 = 5
Looking for similar summands in the left part:
-4 - 2*x = 5
Move free summands (without x)
from left part to right part, we given:
$$- 2 x = 9$$
Divide both parts of the equation by -2
x = 9 / (-2)
We get the answer: x = -9/2
Sum and product of roots
[src]
sum
-9/2
$$- \frac{9}{2}$$
=
-9/2
$$- \frac{9}{2}$$
product
-9/2
$$- \frac{9}{2}$$
=
-9/2
$$- \frac{9}{2}$$
-9/2