1.
+ 
-8\\4>-3" alt="-6>-8\\4>-3" align="absmiddle" class="latex-formula">
--------------
-8+(-3)" alt="-6 + 4 > -8+(-3)" align="absmiddle" class="latex-formula"> ⇒ 
-11" alt="-2 > -11" align="absmiddle" class="latex-formula">
+ 
-10\\y>-2" alt="x>-10\\y>-2" align="absmiddle" class="latex-formula">
--------------
-10 +(- 2)" alt="x + y > -10 +(- 2)" align="absmiddle" class="latex-formula"> ⇒ 
-12" alt="x + y > -12" align="absmiddle" class="latex-formula">
-8 +(- 3)" alt="-x + 4 > -8 +(- 3)" align="absmiddle" class="latex-formula">
2.
× 
--------------
⇒ 
× 
--------------
⇒ 
3.
× 
7\\x+3>2" alt="x-3>7\\x+3>2" align="absmiddle" class="latex-formula">
--------------
7\cdot 2" alt="(x-3)\cdot (x+3)> 7\cdot 2" align="absmiddle" class="latex-formula"> ⇒ 
9" alt="x^2-9>9" align="absmiddle" class="latex-formula">
× 
5\\y-4>6" alt="y+4>5\\y-4>6" align="absmiddle" class="latex-formula">
--------------
5\cdot 6" alt="(y-4)\cdot(y+ 4)>5\cdot 6" align="absmiddle" class="latex-formula"> ⇒ 
30" alt="y^2-16>30" align="absmiddle" class="latex-formula">
× 
--------------
⇒ 
× 
--------------
⇒ 
4.
3\\b>8" alt="a>3\\b>8" align="absmiddle" class="latex-formula"> ⇒ + 
12\\b>8" alt="4a>12\\b>8" align="absmiddle" class="latex-formula">
--------------
12+8" alt="4a+b>12+8" align="absmiddle" class="latex-formula"> ⇒ 
20" alt="4a+b>20" align="absmiddle" class="latex-formula">
3\\b>8" alt="a>3\\b>8" align="absmiddle" class="latex-formula"> ⇒ + 
1\\\frac{1}{4} b>2" alt="\frac{1}{3} a>1\\\frac{1}{4} b>2" align="absmiddle" class="latex-formula">
--------------
1+2" alt="\frac{1}{3} a+\frac{1}{4} b>1+2" align="absmiddle" class="latex-formula"> ⇒ 
3" alt="\frac{1}{3} a+\frac{1}{4} b>3" align="absmiddle" class="latex-formula">