How to subtract algebraic expressions?/class7/maths tricks

Subtraction of algebraic expressions

Classify the following into algebraic expression and arithmetic expression. Give reasons also. 3s - 7

If the class mark is 15 and the class width is 4, then write the algebraic expressions to find the class.

Write the following statements as algebraic expression. The product of a variable (x) and minus six, subtracted from twelve.

Write the algebraic expression for: z is multiplies by -3 and the result is subtracted from 13.

Question on rational algebraic function || Short trick OF some trigonometric integration

Write the algebraic expression for the word phrase " 1/4 of the sum of x and 7."