Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^4-4x^2+4=0
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Equation x^4=(3x-10)^2
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Equation (x+1)+(x+3)=5
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Equation 6x^2+x-7=0
- Express {x} in terms of y where:
- 12*x+5*y=7
- 9*x+9*y=7
- 17*x-10*y=16
- 15*x-2*y=-1
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Identical expressions
- (four / seven)x= seven * three / seven
- (4 divide by 7)x equally 7 multiply by 3 divide by 7
- (four divide by seven)x equally seven multiply by three divide by seven
- (4/7)x=73/7
- 4/7x=73/7
- (4 divide by 7)x=7*3 divide by 7
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Similar expressions
- -4/7(x-1)=2
- 1-((35/14-(111/49)/(x*25/38-473/7))*12/55+13/85)/(514/17)=5/7
- 4/7*x=7*3/7
- 4/7x^2=28
- x=42+(4/7xx)
(4/7)x=7*3/7 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
Divide both parts of the equation by 4/7
We get the answer: x = 21/4
(4/7)*x = 7*3/7
Expand brackets in the left part
4/7x = 7*3/7
Divide both parts of the equation by 4/7
x = 3 / (4/7)
We get the answer: x = 21/4
Sum and product of roots
[src]
sum
21/4
$$\frac{21}{4}$$
=
21/4
$$\frac{21}{4}$$
product
21/4
$$\frac{21}{4}$$
=
21/4
$$\frac{21}{4}$$
21/4