Mister Exam
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- Equation:
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Equation 141*10^(-6)*x*3*sqrt(2)=sqrt((1-19881*10^(-12)*x^2)^2+9)
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Equation y+30*5=450
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Equation 8⋅(7+x)−5x=4x−64.
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Equation (x+3)-17=-20
- Express {x} in terms of y where:
- 15*x-17*y=-7
- -11*x-15*y=-7
- -5*x+17*y=-5
- -15*x-2*y=7
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Identical expressions
- eight ⋅(seven +x)−5x=4x− sixty-four .
- 8⋅(7 plus x)−5x equally 4x−64.
- eight ⋅(seven plus x)−5x equally 4x− sixty minus four .
- 8⋅7+x−5x=4x−64.
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Similar expressions
- 8⋅(7-x)−5x=4x−64.
8⋅(7+x)−5x=4x−64. 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:
$$3 x = 4 x - 120$$
Move the summands with the unknown x
from the right part to the left part:
$$- x = -120$$
Divide both parts of the equation by -1
We get the answer: x = 120
8*(7+x)-5*x = 4*x-64
Expand brackets in the left part
8*7+8*x-5*x = 4*x-64
Looking for similar summands in the left part:
56 + 3*x = 4*x-64
Move free summands (without x)
from left part to right part, we given:
$$3 x = 4 x - 120$$
Move the summands with the unknown x
from the right part to the left part:
$$- x = -120$$
Divide both parts of the equation by -1
x = -120 / (-1)
We get the answer: x = 120
The graph