Evaluate 9

Evaluate expression:

3 { 4 − 4 ( 5 − 12 ) } + 20

Correct answer:

x =  116

Step-by-step explanation:

a=512=7 b=4 a=4 (7)=28 c=4b=4(28)=32 d=3 c=3 32=96  x=d+20=96+20=116   Verifying Solution:   x1=3 (44 (512))+20=116



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