1. (22+а)-7 = 22+а-7 = 15+а
2. <span>(с+84)-48 = с+84-48 = с+36
3. </span><span>69-(m+12) = 69-m-12 = 57-m
4. </span><span>316-(95-b) = 316-95+b = 221+b</span>
310дм 46см-245дм =65 дм 46см.
24+х=47
Х=47-24
Х=23
У+26=47
У=47-26
У=21
<span>23>21 </span>
Х+13=30
Х=30-13
Х=17
13+у=40
У=40-13
У=27
17<27
Х-15=30
Х=30+15
Х=45
У-25=30
У=55
<span>45<55</span>
Думаю помогла!!)))))))))))))