Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^2+2x+1=0
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Equation sinx=1
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Equation cosx=1/2
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Equation x+x/9=-10/3
- Express {x} in terms of y where:
- 8*x+3*y=-15
- -12*x+13*y=-12
- -20*x-10*y=11
- -18*x-8*y=-3
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Identical expressions
- 5x+ four + three =9x/ four
- 5x plus 4 plus 3 equally 9x divide by 4
- 5x plus four plus three equally 9x divide by four
- 5x+4+3=9x divide by 4
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Similar expressions
- 3^x+4+(3*5)^x+3=5^x+4+3^x+3
- 5x-4+3=9x/4
- 5x+4-3=9x/4
- 9*x/4=243
- 5*x+4/2+3=9*x/4
5x+4+3=9x/4 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$5 x = \frac{9 x}{4} - 7$$
Move the summands with the unknown x
from the right part to the left part:
$$\frac{11 x}{4} = -7$$
Divide both parts of the equation by 11/4
We get the answer: x = -28/11
5*x+4+3 = 9*x/4
Looking for similar summands in the left part:
7 + 5*x = 9*x/4
Move free summands (without x)
from left part to right part, we given:
$$5 x = \frac{9 x}{4} - 7$$
Move the summands with the unknown x
from the right part to the left part:
$$\frac{11 x}{4} = -7$$
Divide both parts of the equation by 11/4
x = -7 / (11/4)
We get the answer: x = -28/11
Sum and product of roots
[src]
sum
-28 ---- 11
$$- \frac{28}{11}$$
=
-28 ---- 11
$$- \frac{28}{11}$$
product
-28 ---- 11
$$- \frac{28}{11}$$
=
-28 ---- 11
$$- \frac{28}{11}$$
-28/11