Simplify Expressions

Front

Simplify by combining like terms: 5a + 2b - 3a + 4

Back

2a + 2b + 4

Answer explanation

Combine like terms: (5a - 3a) + 2b + 4 = 2a + 2b + 4. Thus, the correct answer is 2a + 2b + 4.

Tags

CCSS.7.EE.A.1

Front

3x - 5x

Back

-2x

Answer explanation

To simplify 3x - 5x, combine like terms: 3x - 5x = (3 - 5)x = -2x. Thus, the correct answer is -2x.

Tags

CCSS.7.EE.A.1

Front

Simplify the expression: 3x + 2x

Back

5x

Answer explanation

To simplify 3x + 2x, combine the like terms. Add the coefficients: 3 + 2 = 5. Thus, the expression simplifies to 5x, which is the correct answer.

Tags

CCSS.7.EE.A.1

Front

-6k + 7k=

Back

k

Answer explanation

To solve -6k + 7k, combine the coefficients: -6 + 7 = 1. Thus, -6k + 7k = 1k, which simplifies to k. Therefore, the correct answer is k.

Tags

CCSS.7.EE.A.1

Front

-r - 10r

Back

-11r

Answer explanation

To simplify -r - 10r, combine like terms: -1r - 10r = -11r. Thus, the correct answer is -11r.

Tags

CCSS.7.EE.A.1

Front

Simplify the expression: 2x + 1 + 7x

Back

9x + 1

Answer explanation

To simplify 2x + 1 + 7x, combine like terms: 2x + 7x = 9x. The constant term remains 1. Thus, the expression simplifies to 9x + 1, which is the correct answer.

Tags

CCSS.7.EE.A.1

Front

Combine like terms
3x + 2x + 3y - 7y

Back

5x - 4y

Answer explanation

Combine like terms: 3x + 2x = 5x and 3y - 7y = -4y. Thus, the expression simplifies to 5x - 4y, which matches the correct answer.

Tags

CCSS.7.EE.A.1

Front

n -10 +9n -3=

Back

10n -13

Answer explanation

To simplify the expression n - 10 + 9n - 3, combine like terms: n + 9n = 10n and -10 - 3 = -13. Thus, the expression simplifies to 10n - 13, which is the correct answer.

Tags

CCSS.7.EE.A.1

Front

Simplify the expression: -9(14p - 8) - 4p

Back

-130p + 72

Answer explanation

Distribute -9: -9*14p + 72 = -126p + 72. Then, subtract 4p: -126p - 4p = -130p + 72. Thus, the simplified expression is -130p + 72, which matches the correct answer.

Tags

CCSS.6.EE.A.3

Front

Simplify the expression: -6x + 4(-x - 3)

Back

-10x - 12

Answer explanation

First, distribute 4: -6x + 4(-x) + 4(-3) = -6x - 4x - 12. Combine like terms: -6x - 4x = -10x. Thus, the simplified expression is -10x - 12, which matches the correct answer.

Tags

CCSS.6.EE.A.3