Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x+(8-3x)=12
-
Equation 25*x^2-10*x+1=0
- Equation 3^8-x=27
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Equation 4*x=0
- Express {x} in terms of y where:
- 14*x-17*y=-4
- 18*x-10*y=-9
- 6*x-17*y=-12
- 19*x-7*y=-11
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Identical expressions
- 4x+ three (x- seven)= five
- 4x plus 3(x minus 7) equally 5
- 4x plus three (x minus seven) equally five
- 4x+3x-7=5
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Similar expressions
- 4x-3(x-7)=5
- 4x+3(x+7)=5
4x+3(x-7)=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:
$$7 x = 26$$
Divide both parts of the equation by 7
We get the answer: x = 26/7
4*x+3*(x-7) = 5
Expand brackets in the left part
4*x+3*x-3*7 = 5
Looking for similar summands in the left part:
-21 + 7*x = 5
Move free summands (without x)
from left part to right part, we given:
$$7 x = 26$$
Divide both parts of the equation by 7
x = 26 / (7)
We get the answer: x = 26/7
Sum and product of roots
[src]
sum
26/7
$$\frac{26}{7}$$
=
26/7
$$\frac{26}{7}$$
product
26/7
$$\frac{26}{7}$$
=
26/7
$$\frac{26}{7}$$
26/7
The graph