Mister Exam
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How to use it?
- Equation:
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Equation x/4+x=12
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Equation 5^x=6-x
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Equation -5+2x=-2x-7
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Equation x^2-18=7*x
- Express {x} in terms of y where:
- -16*x-9*y=-1
- -18*x-13*y=2
- 8*x-4*y=10
- -6*x-11*y=-20
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Identical expressions
- 7x+ thirty =19x- six
- 7x plus 30 equally 19x minus 6
- 7x plus thirty equally 19x minus six
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Similar expressions
- 7x+30=19x+6
- 8*(27-x)=7*(x+30)
- 30*x^4+17*x^3-228*x^2-17*x+30=0
- 7*x+30=19*x-6
- 7x-30=19x-6
- (a+2)*81^x-(a-1)*9^x-6*a+5=0
7x+30=19x-6 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Move free summands (without x)
from left part to right part, we given:
$$7 x = 19 x - 36$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-12\right) x = -36$$
Divide both parts of the equation by -12
We get the answer: x = 3
7*x+30 = 19*x-6
Move free summands (without x)
from left part to right part, we given:
$$7 x = 19 x - 36$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-12\right) x = -36$$
Divide both parts of the equation by -12
x = -36 / (-12)
We get the answer: x = 3
The graph