Which of the following equations has a solution of negative 7

A. -3x-8=-29
B. 4X-23=5
C.-X+3=-4
D. 5X+11=-24

1 answer

To determine which equation has a solution of negative 7, we will substitute \( x = -7 \) into each equation and see if the equation holds true.

A. \(-3(-7) - 8 = -29\)

\[ 21 - 8 = -29 \implies 13 \neq -29 \quad \text{(not a solution)} \]

B. \(4(-7) - 23 = 5\)

\[ -28 - 23 = 5 \implies -51 \neq 5 \quad \text{(not a solution)} \]

C. \(-(-7) + 3 = -4\)

\[ 7 + 3 = -4 \implies 10 \neq -4 \quad \text{(not a solution)} \]

D. \(5(-7) + 11 = -24\)

\[ -35 + 11 = -24 \implies -24 = -24 \quad \text{(is a solution)} \]

The equation that has a solution of negative 7 is D. \( 5x + 11 = -24\).