Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation cos(x)=-3
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Equation x²-6x+5=0
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Equation (5+7*a)*15=-30
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Equation 1/2x=5
- Express {x} in terms of y where:
- -19*x-10*y=-10
- -3*x-18*y=-15
- 20*x-10*y=6
- 17*x-8*y=8
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Identical expressions
- -(5x+ twelve)+9x= zero
- minus (5x plus 12) plus 9x equally 0
- minus (5x plus twelve) plus 9x equally zero
- -5x+12+9x=0
- -(5x+12)+9x=O
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Similar expressions
- (5x+12)+9x=0
- -(5x+12)-9x=0
- -(5x-12)+9x=0
-(5x+12)+9x=0 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:
$$4 x = 12$$
Divide both parts of the equation by 4
We get the answer: x = 3
-(5*x+12)+9*x = 0
Expand brackets in the left part
-5*x-12+9*x = 0
Looking for similar summands in the left part:
-12 + 4*x = 0
Move free summands (without x)
from left part to right part, we given:
$$4 x = 12$$
Divide both parts of the equation by 4
x = 12 / (4)
We get the answer: x = 3