Mister Exam
Other calculators
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How to use it?
- Equation:
-
Equation -4x+9=-19
-
Equation -4x+3=2x
- Equation 3*x^3-27*x=0
- Equation x^0.5+2=0
- Express {x} in terms of y where:
- 19*x-18*y=15
- 13*x-13*y=-4
- 19*x-20*y=-12
- 12*x+7*y=15
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Identical expressions
- - four / seven (x- one)= two
- minus 4 divide by 7(x minus 1) equally 2
- minus four divide by seven (x minus one) equally two
- -4/7x-1=2
- -4 divide by 7(x-1)=2
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Similar expressions
- -4/7(x+1)=2
- (-4/7x-1,2)×5-11/2=3,74
- 4/7(x-1)=2
-4/7(x-1)=2 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:
$$- \frac{4 x}{7} = \frac{10}{7}$$
Divide both parts of the equation by -4/7
We get the answer: x = -5/2
-4/7*(x-1) = 2
Expand brackets in the left part
-4/7*x+4/7*1 = 2
Move free summands (without x)
from left part to right part, we given:
$$- \frac{4 x}{7} = \frac{10}{7}$$
Divide both parts of the equation by -4/7
x = 10/7 / (-4/7)
We get the answer: x = -5/2
Sum and product of roots
[src]
sum
-5/2
$$- \frac{5}{2}$$
=
-5/2
$$- \frac{5}{2}$$
product
-5/2
$$- \frac{5}{2}$$
=
-5/2
$$- \frac{5}{2}$$
-5/2