Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation sin(x)+cos(x)=-1
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Equation 3*9^(x-1/2)-7*6^x+3*4^(x+1)=0
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Equation 13x+10=6x-4
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Equation (x-2)^4+3*(x-2)^2-10=0
- Express {x} in terms of y where:
- -4*x+6*y=-7
- 2*x+3*y=14
- -14*x-12*y=5
- -11*x+9*y=-20
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Identical expressions
- twelve - four (x- three)= thirty-nine -9x
- 12 minus 4(x minus 3) equally 39 minus 9x
- twelve minus four (x minus three) equally thirty minus nine minus 9x
- 12-4x-3=39-9x
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Similar expressions
- 12+4(x-3)=39-9x
- 12-4(x+3)=39-9x
- 12-(4x-3)=39-9x
- 12-4(x-3)=39+9x
- (2x-1)^2-4(x-3)(x+2)=0
12-4(x-3)=39-9x 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:
$$- 4 x = 15 - 9 x$$
Move the summands with the unknown x
from the right part to the left part:
$$5 x = 15$$
Divide both parts of the equation by 5
We get the answer: x = 3
12-4*(x-3) = 39-9*x
Expand brackets in the left part
12-4*x+4*3 = 39-9*x
Looking for similar summands in the left part:
24 - 4*x = 39-9*x
Move free summands (without x)
from left part to right part, we given:
$$- 4 x = 15 - 9 x$$
Move the summands with the unknown x
from the right part to the left part:
$$5 x = 15$$
Divide both parts of the equation by 5
x = 15 / (5)
We get the answer: x = 3
The graph