Ответ:

(134545-х) +23=98

134545-х= 98-23

134545-х=75

х=134545-75

х=134470

(х+52)÷7=700

х+52= 700×7

х+52=4900

х=4900-52

х=4848

2002+х×5=46022

х×5=46022-2002

х×5=44020

х=44020÷5

х= 8804

34000+х×1000=76000

х×1000= 76000-34000

х×1000=42000

х=42000÷1000

х= 42