Помогите последние три))

Question

Помогите последние три))

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Answer 1

6(350-b)=960
2100-6b=960
6b=2100-960
b=1140÷6
b=19

b÷15+47=53
b÷15=53-47
b÷15=6
b=15×6
b=90

b÷27+48=26×2
b÷27=52-48
b÷27=4
b=27×4
b=108

Answer 2

6*(350-190)=960
90:15+47=53
108:27+48=26*2