Mister Exam
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How to use it?
- Equation:
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Equation x+7*4=40
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Equation 4*x-8=x+1
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Equation z^2+z+2=0
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Equation -x^2+6*x-7=0
- Express {x} in terms of y where:
- -13*x-14*y=-14
- -7*x+7*y=15
- -11*x+20*y=-6
- -2*x+7*y=-9
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Identical expressions
- - four (x- eight)- six =- fourteen
- minus 4(x minus 8) minus 6 equally minus 14
- minus four (x minus eight) minus six equally minus fourteen
- -4x-8-6=-14
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Similar expressions
- -4(x-8)+6=-14
- -4(x+8)-6=-14
- 4(x-8)-6=-14
- -4(x-8)-6=+14
- x^2-(1400*0.799)^2-x*(5.22*0.799)^2=0
-4(x-8)-6=-14 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:
$$- 4 x = -40$$
Divide both parts of the equation by -4
We get the answer: x = 10
-4*(x-8)-6 = -14
Expand brackets in the left part
-4*x+4*8-6 = -14
Looking for similar summands in the left part:
26 - 4*x = -14
Move free summands (without x)
from left part to right part, we given:
$$- 4 x = -40$$
Divide both parts of the equation by -4
x = -40 / (-4)
We get the answer: x = 10