−1.8=

0.2+
0.2
c

1 answer

To solve the equation \(-1.8 = 0.2 + 0.2c\), we can follow these steps:

  1. First, simplify the right side: \[ 0.2 + 0.2c = 0.2(1 + c) \]

  2. Rewrite the equation: \[ -1.8 = 0.2(1 + c) \]

  3. Divide both sides by 0.2 to isolate \(1 + c\): \[ -\frac{1.8}{0.2} = 1 + c \] \[ -9 = 1 + c \]

  4. Subtract 1 from both sides: \[ -9 - 1 = c \] \[ c = -10 \]

So the solution is: \[ c = -10 \]