Mister Exam
Other calculators
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How to use it?
- Equation:
-
Equation sin(-x)=0
-
Equation (x+1)+(x+3)=5
-
Equation 2/7x+4=3/5x-7
-
Equation x^6=1
- Express {x} in terms of y where:
- -5*x-11*y=19
- -9*x-16*y=-5
- 11*x-9*y=-19
- -18*x+6*y=15
-
Identical expressions
- - four (5x- three)- three (4x+ seven)= seven
- minus 4(5x minus 3) minus 3(4x plus 7) equally 7
- minus four (5x minus three) minus three (4x plus seven) equally seven
- -45x-3-34x+7=7
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Similar expressions
- -4(5x+3)-3(4x+7)=7
- 4(5x-3)-3(4x+7)=7
- -4(5x-3)-3(4x-7)=7
- -4(5x-3)+3(4x+7)=7
-4(5x-3)-3(4x+7)=7 equation
The teacher will be very surprised to see your correct solution 😉
The solution
You have entered
[src]
-4*(5*x - 3) - 3*(4*x + 7) = 7
$$- 3 \left(4 x + 7\right) - 4 \left(5 x - 3\right) = 7$$
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:
$$- 32 x = 16$$
Divide both parts of the equation by -32
We get the answer: x = -1/2
-4*(5*x-3)-3*(4*x+7) = 7
Expand brackets in the left part
-4*5*x+4*3-3*4*x-3*7 = 7
Looking for similar summands in the left part:
-9 - 32*x = 7
Move free summands (without x)
from left part to right part, we given:
$$- 32 x = 16$$
Divide both parts of the equation by -32
x = 16 / (-32)
We get the answer: x = -1/2
Sum and product of roots
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sum
-1/2
$$- \frac{1}{2}$$
=
-1/2
$$- \frac{1}{2}$$
product
-1/2
$$- \frac{1}{2}$$
=
-1/2
$$- \frac{1}{2}$$
-1/2