Question

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1)24+x=45; 2)x-56=80; 3)x+78=138; 4)45-6x+7x=68; 5)5x-(4x-23)=67; 

Answer 1

1)24+x=45;
х=45-24
х=21

2)x-56=80;
х=80+56
х=136

3)x+78=138;
х=138-78
х=60

4)45-6x+7x=68;
45+х=68
х=68-45
х=23

5)5x-(4x-23)=67;
5х-4х+23=67
х+23=67
х=67-23
х=44