Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 4-6*(x+2)=3-5*x
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Equation 4-6(x+2)=3-5x
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Equation 1+sin(x)=0
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Equation x^2-3*x+1=0
- Express {x} in terms of y where:
- 18*x-8*y=-2
- -11*x+15*y=7
- 6*x+17*y=3
- 1*x+10*y=-18
- Graphing y =:
- 8*x+9
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Identical expressions
- eight *x+ nine = four - five *x- seven *x- fifteen
- 8 multiply by x plus 9 equally 4 minus 5 multiply by x minus 7 multiply by x minus 15
- eight multiply by x plus nine equally four minus five multiply by x minus seven multiply by x minus fifteen
- 8x+9=4-5x-7x-15
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Similar expressions
- 8*x-9=4-5*x-7*x-15
- 5-2x=8x+9
- 18x+9=14-32x
- 8*x+9=4-5*x+7*x-15
- 8*x+9=4-5*x-7*x+15
- 8*x+9=4+5*x-7*x-15
8*x+9=4-5*x-7*x-15 equation
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The solution
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8*x + 9 = 4 - 5*x - 7*x - 15
$$8 x + 9 = \left(- 7 x + \left(4 - 5 x\right)\right) - 15$$
Detail solution
Given the linear equation:
Looking for similar summands in the right part:
Move free summands (without x)
from left part to right part, we given:
$$8 x = - 12 x - 20$$
Move the summands with the unknown x
from the right part to the left part:
$$20 x = -20$$
Divide both parts of the equation by 20
We get the answer: x = -1
8*x+9 = 4-5*x-7*x-15
Looking for similar summands in the right part:
9 + 8*x = -11 - 12*x
Move free summands (without x)
from left part to right part, we given:
$$8 x = - 12 x - 20$$
Move the summands with the unknown x
from the right part to the left part:
$$20 x = -20$$
Divide both parts of the equation by 20
x = -20 / (20)
We get the answer: x = -1