Mister Exam
Other calculators
- Square Inequality Step-by-Step
- Inequality with the module Step by Step
- Logarithmic inequality online
-
How to use it?
- Inequation:
- 25^((1/x-1))-4*5^((1/x)-1)-5=>0
- (1/4)^2>=8
- (3x-5)^0,5<5
- -(3+x):x>1
- Integral of d{x}:
- 7y
- 7y
- Limit of the function:
-
21
- Sum of series:
-
21
-
Identical expressions
- 7y< twenty-one
- 7y less than 21
- 7y less than twenty minus one
-
Similar expressions
- log(1/2)*(1-x)>log(1/2)*(15*x+6)
- lg(3*x+2*sqrt(x)-2)*1/(lg(5*x+3*sqrt(x)-3)^3)>=(log(10)/log(27))/(log(10)/log(3)(10))
- (((3x+7)^0.5)+2)^(1-x)>=(3+x)^(1-x)
- (log(2-2*x)*1/log(12)-log(2-2*x)*1/log(18))*1/(log(4*x^2)*1/log(29)-2*log(2*x)*1/log(14))>log(1/4)*1/log(36)
7y<21 inequation
The solution
Detail solution
Given the inequality:
$$7 y < 21$$
To solve this inequality, we must first solve the corresponding equation:
$$7 y = 21$$
Solve:
$$x_{1} = 3$$
$$x_{1} = 3$$
This roots
$$x_{1} = 3$$
is the points with change the sign of the inequality expression.
First define with the sign to the leftmost point:
$$x_{0} < x_{1}$$
For example, let's take the point
$$x_{0} = x_{1} - \frac{1}{10}$$
=
$$- \frac{1}{10} + 3$$
=
$$2.9$$
substitute to the expression
$$7 y < 21$$
$$7 y < 21$$
Then
$$x < 3$$
no execute
the solution of our inequality is:
$$x > 3$$
$$7 y < 21$$
To solve this inequality, we must first solve the corresponding equation:
$$7 y = 21$$
Solve:
$$x_{1} = 3$$
$$x_{1} = 3$$
This roots
$$x_{1} = 3$$
is the points with change the sign of the inequality expression.
First define with the sign to the leftmost point:
$$x_{0} < x_{1}$$
For example, let's take the point
$$x_{0} = x_{1} - \frac{1}{10}$$
=
$$- \frac{1}{10} + 3$$
=
$$2.9$$
substitute to the expression
$$7 y < 21$$
$$7 y < 21$$
7*y < 21
Then
$$x < 3$$
no execute
the solution of our inequality is:
$$x > 3$$
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