![\"\"](\"http://c4anything.com/userfiles/image/steps_images/step1.JPG\")
The equation is 19 = c + 12.
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According to subtraction property of equality: If a = b, then a ![\"\"](\"http://c4anything.com/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7a8c800d2df7d176b09fff75181eb8f.png\")
c = b c.
19 12= c + 12 12 (Subtract 12 from each sides)
c = 19 12 (Additive inverse property: 12 12 = 0)
c = 7 (Subtract: 19 12 = 7)
![\"\"](\"http://c4anything.com/userfiles/image/steps_images/step2.JPG\")
Check:
\To check the solution, substitute c = 7 in original equation.
\ 19 = c + 12![\"\"](\"http://c4anything.com/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cf88eb4b75e2e087ff1d68b5148e102c.png\")
19 = 7 + 12
19 = 19 (Add: 7 + 12 = 19 )
\Compare the values, the equation is true. The solution is c = 7.
\![\"\"](\"http://c4anything.com/userfiles/image/steps_images/solution.JPG\")
The value of c = 7.