Mathematics: Which of the following expressions has a simplified value of 3a - 2? Group of answer choices -8 + 3a + 10 - a -10 - 5a + 12 + 8a -a + 4 + 5a - a - 6 -6a + 9a + 4 - 2

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Which of the following expressions has a simplified

ericadawn2852

06.02.2022

Given:

Simplified value is 3a-2.

To find:

The expression which has a simplified value of 3a - 2.

Solution:

In option A,

-8+3a+10-a=(-8+10)+(3a-a)

$-8+3a+10-a=2+2a\neq 3a-2$

In option B,

-10-5a+12+8a=(-10+12)+(-5a+8a)

$-10-5a+12+8a=2+3a\neq 3a-2$

In option C,

-a+4+5a-a-6=(-a+5a-a)+(4-6)

-a+4+5a-a-6=3a-2

In option D,

$-6a+9a+4-2=3a+2\neq 3a-2$

Therefore, the correct option is C.

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