Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^2+7=0
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Equation -5*x=25
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Equation 5*sin(x)+cos(x)=5
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Equation 4*x^2+7=7+24*x
- Express {x} in terms of y where:
- 17*x-19*y=-12
- 3*x+19*y=4
- 13*x-1*y=-20
- -6*x+11*y=-5
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Identical expressions
- four (x- six)= seven (x+ nine)
- 4(x minus 6) equally 7(x plus 9)
- four (x minus six) equally seven (x plus nine)
- 4x-6=7x+9
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Similar expressions
- 7x+9=4x+3
- 18*x^2-27x+9=0
- (x-4)*(x-6)-(x-2)*(x+2)=-2
- 1-x/2-2(3-4x)-6,5(x-1)=2x
- x^2-4*x-60=0
- x+2/4+4x-6/3-9-x/12=1
- 4(x+6)=7(x+9)
- -1*x^3+15*x^2-67*x+93=0
- 4(x-6)=7(x-9)
- -7+9x=-17x+9
4(x-6)=7(x+9) 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
Expand brackets in the right part
Move free summands (without x)
from left part to right part, we given:
$$4 x = 7 x + 87$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-3\right) x = 87$$
Divide both parts of the equation by -3
We get the answer: x = -29
4*(x-6) = 7*(x+9)
Expand brackets in the left part
4*x-4*6 = 7*(x+9)
Expand brackets in the right part
4*x-4*6 = 7*x+7*9
Move free summands (without x)
from left part to right part, we given:
$$4 x = 7 x + 87$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-3\right) x = 87$$
Divide both parts of the equation by -3
x = 87 / (-3)
We get the answer: x = -29
The graph