Subtract: 5a2 - 7ab + 5b2 from 3ab - 2a2 -2b2

Subtract: 5a² - 7ab + 5b² from 3ab - 2a² -2b²

(3ab - 2a² - 2b²) - (5a² - 7ab + 5b²)

= 3ab - 2a² - 2b² - 5a² + 7ab - 5 b²

= 3ab + 7ab - 2a² - 5a² − 2b² - 5 b²

= 10ab - 7a² - 7b²

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Add: 3p²q² - 4pq + 5, - 10p²q², 15 + 9pq + 7p²q²

Add: x² - y² - 1 , y² - 1 - x², 1- x² - y²

Subtract: 4pq - 5q² - 3p² from 5p² + 3q² - pq

Add the following algebraic expression:

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

Subtract:

− 5xy from 12xy

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

Add:

2a + 6b + 8c; 16a + 13c + 18b

Find the sum of the following expressions

5xyz – 3xy, 3zxy – 5yx

Add: 2a + b + 3c and `"a" + 1/3"b" + 2/5"c"`

Add the following expressions:

uv – vw, vw – wu and wu – uv