Mister Exam
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How to use it?
- Equation:
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Equation x^2+9=(x+9)^2
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Equation 3*x+5+(x+5)=(1-x)+4
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Equation cos(x)=-1
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Equation 9x-7=6x+14
- Express {x} in terms of y where:
- -1*x-20*y=-17
- 7*x+13*y=-13
- -13*x+7*y=11
- 9*x+18*y=3
- Derivative of:
- 6x+14
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Identical expressions
- 9x- seven =6x+ fourteen
- 9x minus 7 equally 6x plus 14
- 9x minus seven equally 6x plus fourteen
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Similar expressions
- 2*x^4+8*x^3-80*x^2-96*x+1440+0
- 9*x-7=6*x+14
- 9^x+1-9^x-72=0
- 9x+7=6x+14
- 9*x-72*√x=0
- (-9*x-(73/10)*y)+(13*y+(77/10)*x)=0
- 9x-7=6x-14
9x-7=6x+14 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:
$$9 x = 6 x + 21$$
Move the summands with the unknown x
from the right part to the left part:
$$3 x = 21$$
Divide both parts of the equation by 3
We get the answer: x = 7
9*x-7 = 6*x+14
Move free summands (without x)
from left part to right part, we given:
$$9 x = 6 x + 21$$
Move the summands with the unknown x
from the right part to the left part:
$$3 x = 21$$
Divide both parts of the equation by 3
x = 21 / (3)
We get the answer: x = 7
The graph