Sure! Here are the completed solutions for the equations given in the questions:
Question 1
The equation \( -3x - 9 = -21 \) is solved as follows:
\[ -3x - 9 = -21 \]
Adding 9 to both sides: \[ -3x = -21 + 9 \] \[ -3x = -12 \]
Dividing both sides by \(-3\): \[ x = \frac{-12}{-3} \] \[ x = 4 \]
Question 2
The equation \( 10x + 13 = -12 \) is solved as follows:
\[ 10x + 13 = -12 \]
Subtracting 13 from both sides: \[ 10x = -12 - 13 \] \[ 10x = -25 \]
Dividing both sides by 10: \[ x = \frac{-25}{10} \] \[ x = -2.5 \]
Question 3
To solve \( 5 - 6x = -7 \):
First, subtract 5 from both sides: \[ -6x = -7 - 5 \] \[ -6x = -12 \]
Next, divide both sides by -6: \[ x = \frac{-12}{-6} \] \[ x = 2 \]
Question 4
The equation \( 53x + 113 = -43 \) is solved as follows:
\[ 53x + 113 = -43 \]
Subtracting 113 from both sides: \[ 53x = -43 - 113 \] \[ 53x = -156 \]
Multiplying both sides by \( \frac{3}{5} \) (the reciprocal of \(\frac{5}{3}\)): \[ x = -156 \cdot \frac{3}{53} \] \[ x = -\frac{468}{53} \] (The exact arithmetic gives the fractional representation, though it can be calculated further into decimal form if preferred.)
Question 5
The equation \( 0.24x - 0.74 = -1.1 \) is solved as follows:
\[ 0.24x - 0.74 = -1.1 \]
Adding \( 0.74 \) to both sides: \[ 0.24x = -1.1 + 0.74 \] \[ 0.24x = -0.36 \]
Dividing both sides by \( 0.24 \): \[ x = \frac{-0.36}{0.24} \] \[ x = -1.5 \]
Feel free to let me know if you need more assistance!