Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 9-2(-4x+7)=7
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Equation x+3=-9x
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Equation 3x^2+6x=0
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Equation k^2+k-6=0
- Express {x} in terms of y where:
- -1*x-7*y=5
- 1*x+19*y=-10
- -13*x+9*y=1
- -10*x-16*y=-6
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Identical expressions
- nine - two (-4x+ seven)= seven
- 9 minus 2( minus 4x plus 7) equally 7
- nine minus two ( minus 4x plus seven) equally seven
- 9-2-4x+7=7
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Similar expressions
- 9+2(-4x+7)=7
- 9-2(-4x-7)=7
- 9-2*(-4*x+7)=7
- 9-2*(-4x+7)=7
- 9-2(4x+7)=7
9-2(-4x+7)=7 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
Move free summands (without x)
from left part to right part, we given:
$$8 x = 12$$
Divide both parts of the equation by 8
We get the answer: x = 3/2
9-2*(-4*x+7) = 7
Expand brackets in the left part
92*4*x-2*7 = 7
Move free summands (without x)
from left part to right part, we given:
$$8 x = 12$$
Divide both parts of the equation by 8
x = 12 / (8)
We get the answer: x = 3/2
Sum and product of roots
[src]
sum
0 + 3/2
$$0 + \frac{3}{2}$$
=
3/2
$$\frac{3}{2}$$
product
1*3/2
$$1 \cdot \frac{3}{2}$$
=
3/2
$$\frac{3}{2}$$
3/2
The graph