Mister Exam
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How to use it?
- Equation:
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Equation 3*x^2-8*x-3=0
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Equation 3*x=5
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Equation 4-x=1
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Equation (x+5)^2=0
- Express {x} in terms of y where:
- -17*x-11*y=16
- -9*x+8*y=-11
- 17*x+18*y=8
- 15*x-20*y=4
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Identical expressions
- (7x+ one)-(9x+ three)= six
- (7x plus 1) minus (9x plus 3) equally 6
- (7x plus one) minus (9x plus three) equally six
- 7x+1-9x+3=6
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Similar expressions
- (7x+1)+(9x+3)=6
- (7x+1)-(9x-3)=6
- (7x-1)-(9x+3)=6
(7x+1)-(9x+3)=6 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:
$$- 2 x = 8$$
Divide both parts of the equation by -2
We get the answer: x = -4
(7*x+1)-(9*x+3) = 6
Expand brackets in the left part
7*x+1-9*x-3 = 6
Looking for similar summands in the left part:
-2 - 2*x = 6
Move free summands (without x)
from left part to right part, we given:
$$- 2 x = 8$$
Divide both parts of the equation by -2
x = 8 / (-2)
We get the answer: x = -4
The graph