Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation sin(x)=1/5
-
Equation x^2+11=0
-
Equation x^2+5x+6=0
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Equation -x/7+x=15/7
- Express {x} in terms of y where:
- 9*x+17*y=13
- 20*x+18*y=-9
- -4*x-8*y=-20
- -1*x+4*y=-10
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Identical expressions
- - nine (eight -9x)=4x+5x
- minus 9(8 minus 9x) equally 4x plus 5x
- minus nine (eight minus 9x) equally 4x plus 5x
- -98-9x=4x+5x
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Similar expressions
- -9(8+9x)=4x+5x
- 4*x+5*(x-1)=4
- -9*(8-9x)=4x+5
- x(x+4)(x+5)(x+9)+96=0
- 9(8-9x)=4x+5x
- -9(8-9x)=4x-5x
- 5^(x^2-4x)+5^(x^2-4x)=30
-9(8-9x)=4x+5x 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 right part:
Move free summands (without x)
from left part to right part, we given:
$$81 x = 9 x + 72$$
Move the summands with the unknown x
from the right part to the left part:
$$72 x = 72$$
Divide both parts of the equation by 72
We get the answer: x = 1
-9*(8-9*x) = 4*x+5*x
Expand brackets in the left part
-9*8+9*9*x = 4*x+5*x
Looking for similar summands in the right part:
-72 + 81*x = 9*x
Move free summands (without x)
from left part to right part, we given:
$$81 x = 9 x + 72$$
Move the summands with the unknown x
from the right part to the left part:
$$72 x = 72$$
Divide both parts of the equation by 72
x = 72 / (72)
We get the answer: x = 1