![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The equation is 8.5 + t = 7.1 \ \
\\
According to subtraction property of equality: if a = b, then a ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7a8c800d2df7d176b09fff75181eb8f.png\")
c = b ![\"\"](\"http://c4anything.com/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7a8c800d2df7d176b09fff75181eb8f.png\")
c.
8.5 + t 8.5 = 7.1 8.5 (Subtract 8.5 from each sides)
t = 7.1 8.5 (Additive inverse property:8.5 8.5 = 0)
t = 1.4 (Subtract: 7.1 8.5 = 1.4)
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
Check:
\To check the solution, substitute t = 1.4 in original equation.
8.5 + t = 7.1![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cf88eb4b75e2e087ff1d68b5148e102c.png\")
8.5 1.4 = 7.1
7.1 = 7.1 (Subtract: 8.5 1.4 = 7.1 )
Compare the values, the equation is true. The solution is t = 1.4.
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The value of t = 1.4.