<span><span>294:42=7
</span>294-294=0
</span><span>140:35=4
</span>140-140=0
<span>230:46=5
</span>230-230=0
<span>162:54=3
</span>162-162=0
<span>252:63=4
252-252=0
</span><span>504:84=6
</span>504-504=0
-15х-60+60=-15х
-18+32-8х=-8х+14
42-42-6у=-6у
29-3t+24=-3t+53
1. V = 7³ = 343 дм³
3. ширина - 320➗4➗10 = 8 м, s стен - 2✖️8✖️4 + 2✖️4✖️0 = 64+80 = 144 м²