Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 1-5*x=-6*x+8
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Equation 8*x-3*(2*x+1)=2*x+4
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Equation 3^x+4^x=5^x
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Equation x^4=(3*x-4)^2
- Express {x} in terms of y where:
- 7*x+19*y=12
- -9*x-4*y=-20
- 12*x-14*y=20
- -18*x+8*y=-2
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Identical expressions
- (nine thousand + three thousand +x)/ four =x
- (9000 plus 3000 plus x) divide by 4 equally x
- (nine thousand plus three thousand plus x) divide by four equally x
- 9000+3000+x/4=x
- (9000+3000+x) divide by 4=x
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Similar expressions
- (9000+3000-x)/4=x
- (9000-3000+x)/4=x
(9000+3000+x)/4=x 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:
$$\frac{x}{4} = x - 3000$$
Move the summands with the unknown x
from the right part to the left part:
$$\frac{\left(-3\right) x}{4} = -3000$$
Divide both parts of the equation by -3/4
We get the answer: x = 4000
(9000+3000+x)/4 = x
Expand brackets in the left part
9000/4+3000/4+x/4 = x
Looking for similar summands in the left part:
3000 + x/4 = x
Move free summands (without x)
from left part to right part, we given:
$$\frac{x}{4} = x - 3000$$
Move the summands with the unknown x
from the right part to the left part:
$$\frac{\left(-3\right) x}{4} = -3000$$
Divide both parts of the equation by -3/4
x = -3000 / (-3/4)
We get the answer: x = 4000
Sum and product of roots
[src]
sum
4000
$$4000$$
=
4000
$$4000$$
product
4000
$$4000$$
=
4000
$$4000$$
4000