Answers

2015-08-27T20:17:03+08:00
3 + 5 = 8
72 ÷ 8 = 9
9 × 3 = 27
9 × 5 = 45
Therefore, the numbers are 27 and 45.
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  • Brainly User
2015-08-27T20:30:31+08:00
Let x be the number

Add:  3x + 5x = 72
         8x = 72

Divide both side of equation by 8
         8x/8 = 72/8
         x = 9

Substitute 9 for x:
       3x + 5x = 72
       3(9) + 5(9) = 72
       27 + 45 = 72

The two numbers are 27 and 45



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