Final Cover - For Printing

Therefore, the solution of the given equation is 3.

The process of solving an equation is to be explained to the child with braille text

material followed by the demonstration of a problem by the teacher and then asking

the child to solve a few other problems.

15. Inequality
    An inequality is a mathematical statement in which the two sides of the statement are
    not equal to each other. If the two sides of the statement are not equal to each other,
    then the possibilities are one of the sides must be either greater than or less than the
    other side. The symbol for greater than is ‘>’, and the symbol for less than is ‘<’.

Eg. : 4 > 3

• 435 < -2
  x + y < 10
  -x + 5y > 57

The idea of inequality may also be explained with Braille text, clearly narrating the

difference between an equation and an inequality.

16. Additive property of inequality
    The additive property of inequality states that if a number is added to both sides of
    an inequality, then the value of the inequality will not change.

That is, if a < b, then a + c < b + c

if a > b, then a + c > b + c

The property may be explained through Braille text.

17. Multiplicative property of inequality
    The multiplicative property of inequality states that when an inequality is multiplied
    on both sides by a positive integer, then the value of the inequality is not changed.