Respuesta :

Answer: 4(5 + 4)

Step-by-step explanation:  Both 16 and 20 are multiples of 4, so factor out 4 and  leave the remaining factors in parentheses

4*5 + 4*4  becomes

4(5 + 4) add  inside parentheses

4(9)  multiply to check

4 × 36

same as adding 20 + 16 = 36

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