Secondary School (English Medium) (5 to 8) Class 8 - CBSE Question Bank Solutions for Mathematics

Add the following algebraic expression:

\[\frac{2}{3}a, \frac{3}{5}a, - \frac{6}{5}a\]

Add the following algebraic expression:

 4xy² − 7x²y, 12x²y − 6xy², − 3x²y +5xy²

Add the following algebraic expression:

\[\frac{3}{2}a - \frac{5}{4}b + \frac{2}{5}c, \frac{2}{3}a - \frac{7}{2}b + \frac{7}{2}c, \frac{5}{3}a + \frac{5}{2}b - \frac{5}{4}c\]

Add the following algebraic expression:

\[\frac{11}{2}xy + \frac{12}{5}y + \frac{13}{7}x, - \frac{11}{2}y - \frac{12}{5}x - \frac{13}{7}xy\]

Add the following algebraic expression: \[\frac{7}{2} x^3 - \frac{1}{2} x^2 + \frac{5}{3}, \frac{3}{2} x^3 + \frac{7}{4} x^2 - x + \frac{1}{3}, \frac{3}{2} x^2 - \frac{5}{2}x - 2\]

Subtract:

− 5xy from 12xy

Subtract:

2a² from − 7a²

Subtract:

2a − b from 3a − 5b

Subtract:

2x³ − 4x² + 3x + 5 from 4x³ + x² + x + 6

Subtract:

\[\frac{2}{3} y^3 - \frac{2}{7} y^2 - 5 \text { from  }\frac{1}{3} y^3 + \frac{5}{7} y^2 + y - 2\]

Subtract: 

\[\frac{3}{2}x - \frac{5}{4}y - \frac{7}{2}z \text { from }\frac{2}{3}x + \frac{3}{2}y - \frac{4}{3}z\]

Subtract: 

\[x^2 y - \frac{4}{5}x y^2 + \frac{4}{3}xy \text { from } \frac{2}{3} x^2 y + \frac{3}{2}x y^2 - \frac{1}{3}xy\]

Subtract: 

\[\frac{ab}{7} - \frac{35}{3}bc + \frac{6}{5}ac \text { from } \frac{3}{5}bc - \frac{4}{5}ac\]

Subtract 3x − 4y − 7z from the sum of x − 3y + 2z and − 4x + 9y − 11z.

Subtract the sum of 3l − 4m − 7n² and 2l + 3m − 4n² from the sum of 9l + 2m − 3n² and − 3l + m + 4n² .....

Subtract the sum of 2x − x² + 5 and − 4x − 3 + 7x² from 5.

Verify the property: x × y = y × x by taking:

Verify the property: x × y = y × x by taking: