Respuesta :

Answer:

1 2/5

Step-by-step explanation:

Apply the fractions formula for addition,and solve

Reduce by dividing both the numerator and denominator by the Greatest Common Factor GCF(28,20) = 4

Convert to a mixed number using

long division for 7 ÷ 5 = 1R2,

Therefore:

9/10+1/2=1 2/5

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