NCERT Solutions of Pair of Linear Equations in Two Variables are as follows ... If the number of girls is 4 more than the number of boys, find the number of boys and girls who took part in ...

Algebraic conditions for number of solutions. Solution of a pair of linear equations in two variables algebraically - by substitution, by elimination. Simple situational problems. Q2. Find the ...

The ‘value’ of these letters can change according to certain rules or conditions we are given – hence we can call them variables ... will make the equation balance! To find a, you can ...