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Solve for 
c.

4.2=-0.3-(c)/( 0.4)
Answer: 
c=

Solve for c c .\newline4.2=0.3c0.4 4.2=-0.3-\frac{c}{0.4} \newlineAnswer: c= c=

Full solution

Q. Solve for c c .\newline4.2=0.3c0.4 4.2=-0.3-\frac{c}{0.4} \newlineAnswer: c= c=
  1. Write Equation: Write down the equation.\newline4.2=0.3c0.44.2 = -0.3 - \frac{c}{0.4}\newlineWe need to solve for cc.
  2. Isolate Term: Isolate the term containing cc. To do this, we will add 0.30.3 to both sides of the equation to move the constant term from the right side to the left side. 4.2+0.3=0.3+0.3(c0.4)4.2 + 0.3 = -0.3 + 0.3 - \left(\frac{c}{0.4}\right)
  3. Perform Addition: Perform the addition on both sides.\newline4.5=0c0.44.5 = 0 - \frac{c}{0.4}\newlineNow, we have 4.5=c0.44.5 = - \frac{c}{0.4}.
  4. Get Rid of Negative Sign: To get rid of the negative sign, we can multiply both sides by -1").\(\newline\$-4.5 = \frac{c}{0.4}\)
  5. Multiply by \(-1\): Now, we need to solve for \(c\) by getting rid of the denominator \(0.4\). We can do this by multiplying both sides of the equation by \(0.4\).\(\newline\)\(-4.5 \times 0.4 = \left(\frac{c}{0.4}\right) \times 0.4\)
  6. Solve for \(c\): Perform the multiplication on both sides.\(-1.8 = c\) We have found the value of \(c\).