Помогите с дз (3 номера) :3

Question

Помогите с дз (3 номера) :3

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Answer 1

16x=39.7-7.5

16x=32.2

x=32.2÷16

x=2.01

2.84÷(6.72-2.72)=2.84÷4=0.71

(x-7.06)=8.4÷7

x-7.06=1.2

x=1.2+7.06

x=8,26