Mister Exam
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How to use it?
- Equation:
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Equation (x^2-1)/(x+2)=4x
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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 cos(x)=(1/2)
- Express {x} in terms of y where:
- -13*x+7*y=11
- -8*x-15*y=15
- 4*x+18*y=-14
- -15*x-17*y=13
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Identical expressions
- (9x- four)/ five -(6x- one)/ seven = five
- (9x minus 4) divide by 5 minus (6x minus 1) divide by 7 equally 5
- (9x minus four) divide by five minus (6x minus one) divide by seven equally five
- 9x-4/5-6x-1/7=5
- (9x-4) divide by 5-(6x-1) divide by 7=5
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Similar expressions
- (9x-4)/5-(6x+1)/7=5
- (9x-4)/5+(6x-1)/7=5
- (9x+4)/5-(6x-1)/7=5
(9x-4)/5-(6x-1)/7=5 equation
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The solution
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9*x - 4 6*x - 1 ------- - ------- = 5 5 7
$$- \frac{6 x - 1}{7} + \frac{9 x - 4}{5} = 5$$
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:
$$\frac{33 x}{35} = \frac{198}{35}$$
Divide both parts of the equation by 33/35
We get the answer: x = 6
(9*x-4)/5-(6*x-1)/7 = 5
Expand brackets in the left part
9*x/5-4/5-6*x/7+1/7 = 5
Looking for similar summands in the left part:
-23/35 + 33*x/35 = 5
Move free summands (without x)
from left part to right part, we given:
$$\frac{33 x}{35} = \frac{198}{35}$$
Divide both parts of the equation by 33/35
x = 198/35 / (33/35)
We get the answer: x = 6
The graph