Subtracting Expressions

Front

What is the result of subtracting two expressions?

Back

The result is called the difference, which is found by subtracting the second expression from the first.

Front

How do you simplify the expression (8 - u) - (5u + 1)?

Back

Combine like terms: (8 - u) - (5u + 1) = 8 - u - 5u - 1 = 7 - 6u = -6u + 7.

Front

What is the difference of (-8x + 1) and (8x - 1)?

Back

(-8x + 1) - (8x - 1) = -8x + 1 - 8x + 1 = -16x + 2.

Front

How do you subtract (5x - 6) from (x + 2)?

Back

(5x - 6) - (x + 2) = 5x - 6 - x - 2 = 4x - 8.

Front

What is the simplified form of (5x + 3) - (2x - 5)?

Back

(5x + 3) - (2x - 5) = 5x + 3 - 2x + 5 = 3x + 8.

Front

What is the result of (7a + 4) - (9a + 2)?

Back

(7a + 4) - (9a + 2) = 7a + 4 - 9a - 2 = -2a + 2.

Front

Define 'like terms' in algebra.

Back

Like terms are terms that have the same variable raised to the same power, allowing them to be combined.

Front

What is the first step in subtracting expressions?

Back

Distribute the negative sign across the second expression before combining like terms.

Front

What does it mean to 'combine like terms'?

Back

Combining like terms means to add or subtract coefficients of terms that have the same variable and exponent.

Front

What is the difference between a term and an expression?

Back

A term is a single mathematical entity (like 3x or -5), while an expression is a combination of terms (like 3x - 5).