Answer: or 5.75
Step-by-step explanation:
<em>Step 1</em>. Simplify 21 + 30 to 51
51 = −4c + 28
<em>Step 2</em>. Subtract 28 from both sides
51 - 28 = -4c
<em>Step 3</em>. Simplify 51 - 28 to 23
23 = -4c
<em>Step 4</em>. Divide both sides by -4
= c
<em>Step 5</em>. Switch sides
c =
Decimal Form Answer: -5.75
I hope this helps you out.