5 over 8 plus 7 over 8 equals to 12 over 8. In simpler forms this is either 3 over 2 as a fraction or 1.5 as a decimal.
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8(5+4)+7 = 79
5/8 / 4/7 = 5/8 * 7/4 = 5*7 / 8*4 = 35 / 32
5 over 8 = 5/8 1 over 4 = 1/4 = 2/8 5/8 + 2/8 = 7/8 Answer: 7 over 8
7/5 / 8/5 = 7/8 or seven eighths. Expressed as a decimal, this is equal to 0.875.
When you add 8 and 5 the sum will be 13. On the other hand when you add 6 and 7 the sum will be 13. That's why it's equal to 13.