Mister Exam
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How to use it?
- Equation:
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Equation 3*x+5+(x+5)=(1-x)+4
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Equation cos(x)=3/4
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Equation 7+x=4
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Equation cos(x)=sqrt(3)/2
- Express {x} in terms of y where:
- 1*x-6*y=-19
- 10*x+16*y=-6
- 18*x-20*y=-7
- 18*x-12*y=-20
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Identical expressions
- (7x- eighteen)-(three x- thirteen)=3
- (7x minus 18) minus (3x minus 13) equally 3
- (7x minus eighteen) minus (three x minus thirteen) equally 3
- 7x-18-3x-13=3
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Similar expressions
- (7x-18)+(3x-13)=3
- (7x-18)-(3x+13)=3
- (7x+18)-(3x-13)=3
(7x-18)-(3x-13)=3 equation
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The solution
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7*x - 18 + -3*x + 13 = 3
$$\left(13 - 3 x\right) + \left(7 x - 18\right) = 3$$
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-18)-(3*x-13) = 3
Expand brackets in the left part
7*x-18-3*x+13 = 3
Looking for similar summands in the left part:
-5 + 4*x = 3
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