Mathematics
jmuelle2
12

Determine which equation below has a solution of x = 2. A. 5x + 8 – 12x = –6x + 2x – 3 B. 6x + 4 – 12x = –10x + 18x – 3 C. –4x – 6 + x = –2x + x – 10 D. –3x – 8 + x = –4x + x – 10

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(2) Answers
Edison390

C. –4x – 6 + x = –2x + x – 10 -3x - 6 = -2x + x - 10 -3x - 6 = -x - 10 -3x + x = -10 + 6       -2x = -10 + 6        -2x = - 4           x = -4 / - 2           x = 2

Peanut2

It is important to remember that we can only add and subtract like terms. A. 5x + 8 – 12x = –6x + 2x – 3 5x – 12x  + 6x - 2x= – 3 - 8 -3x = -11 x = 11/3 B. 6x + 4 – 12x = –10x + 18x – 3 6x  – 12x+10x - 18x =  – 3 - 4 -4x = -7 x = 7/4 C. –4x – 6 + x = –2x + x – 10 –4x + x +2x - x =  – 10 + 6 -2x = -4  x = 2 Therefore, the correct answer is option C.

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