Question

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Answer 1

Respuesta:

20)d

21)b

22)b

Explicación paso a paso:

20.

(7-3)=4x4=16-1=15

(9-4)=5x5=25-1=24

(8-6)=2x2=4-1=3

21.

(5x3)+(3x4)=27

(9x2)+(5x3)=33

(6x2)+(4x7)=40

22.

(6+3)x(8-3) = 9x5=45

(5+3)x(7-4)= 8x3=24

(6+2)x(9-1)=8x8=64