3a + 6b = 45
2a - 2b = -12....multiply by 3
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3a + 6b = 45
6a - 6b = - 36 ...(result of multiplying by 3)
---------------add
9a = 9
a = 1
3a + 6b = 45
3(1) + 6b = 45
3 + 6b = 45
6b = 45 - 3
6b = 42
b = 7
solution is : (1,7)
        
                    
             
        
        
        
Answer:a
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Hey mate.....
Step-by-step explanation:
This is ur answer.....
Step 1 :- 
<h2> 18.12</h2><h2>+ <u>93.3</u></h2><h2> 111.42</h2>
Step 2 :- 
<h2> 111.42 </h2><h2>- <u>16.7</u></h2><h2> 94.72</h2>
Hope it helps!
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The word will depend on how many equal shares there are. For example, if there are two equal shares, you can say "halves"; if there are three equal shares, you can say "thirds"; if there are four equal shares, you can say "quarters," etc.