Subtract: - 5y2 from Y2

Subtract: - 5y² from y²

y² - (-5y²) = y² + 5y² = 6y²

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Subtract 3xy + 5yz − 7zx from 5xy − 2yz − 2zx + 10xyz.

Simplify combining like terms: 21b − 32 + 7b − 20b

Add the following algebraic expression:

3a²b, − 4a²b, 9a²b

Add the following algebraic expression:

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

Solve the following equation.

10 = 2y + 5

Find the sum of the following expressions

7p + 6q, 5p – q, q + 16p

Simplify: n + (m + 1) + (n + 2) + (m + 3) + (n + 4) + (m + 5)

On simplification `(3x + 3)/3` = ______.

Add:

xy²z² + 3x²y²z – 4x²yz², – 9x²y²z + 3xy²z² + x²yz²

The number of scarfs of length half metre that can be made from y metres of cloth is ______.