Mister Exam
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How to use it?
- Equation:
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Equation cos(x)=sin(x)
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Equation cos(x)=sqrt(2)/2
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Equation sin(x)+1/2=0
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Equation (7x+9)-(11x-7)=8
- Express {x} in terms of y where:
- 10*x+9*y=-4
- -12*x+3*y=-9
- 9*x-18*y=6
- -1*x+19*y=-10
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Identical expressions
- (seven x+ nine)-(11x-7)= eight
- (7x plus 9) minus (11x minus 7) equally 8
- (seven x plus nine) minus (11x minus 7) equally eight
- 7x+9-11x-7=8
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Similar expressions
- (7x+9)+(11x-7)=8
- (7*x+9)-(11*x-7)=8
- (7x+9)-(11x+7)=8
- (7x-9)-(11x-7)=8
(7x+9)-(11x-7)=8 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:
$$- 4 x = -8$$
Divide both parts of the equation by -4
We get the answer: x = 2
(7*x+9)-(11*x-7) = 8
Expand brackets in the left part
7*x+9-11*x+7 = 8
Looking for similar summands in the left part:
16 - 4*x = 8
Move free summands (without x)
from left part to right part, we given:
$$- 4 x = -8$$
Divide both parts of the equation by -4
x = -8 / (-4)
We get the answer: x = 2
The graph