Mister Exam
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How to use it?
- Equation:
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Equation x^2+2x+1=0
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Equation -x=0
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Equation 5*x=50
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Equation x^2=17
- Express {x} in terms of y where:
- -16*x+1*y=3
- -15*x-12*y=-3
- -19*x-13*y=-19
- -12*x+3*y=9
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Identical expressions
- four (zero ,2x– seven)– five (zero ,3x+ six)= five
- 4(0,2x–7)–5(0,3x plus 6) equally 5
- four (zero ,2x– seven)– five (zero ,3x plus six) equally five
- 40,2x–7–50,3x+6=5
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Similar expressions
- 4(0,2x–7)–5(0,3x-6)=5
4(0,2x–7)–5(0,3x+6)=5 equation
The teacher will be very surprised to see your correct solution 😉
The solution
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/x \ /3*x \ 4*|- - 7| - 5*|--- + 6| = 5 \5 / \ 10 /
$$4 \left(\frac{x}{5} - 7\right) - 5 \left(\frac{3 x}{10} + 6\right) = 5$$
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:
$$- \frac{7 x}{10} = 63$$
Divide both parts of the equation by -7/10
We get the answer: x = -90
4*((1/5)*x-7)-5*((3/10)*x+6) = 5
Expand brackets in the left part
4*1/5x-7)-5*3/10x+6) = 5
Looking for similar summands in the left part:
-58 - 7*x/10 = 5
Move free summands (without x)
from left part to right part, we given:
$$- \frac{7 x}{10} = 63$$
Divide both parts of the equation by -7/10
x = 63 / (-7/10)
We get the answer: x = -90