<span>1)
1)500050-76375=423675
</span><span>2)459458+198542=658000
</span><span>3)247•502=123994
</span><span>4)35958:78=461
</span><span>5)8605•42=361410
</span><span>6)19152:63=304
</span><span>7)500050-76=499974
</span><span>8)375•502=188250</span>
1)6х+8х-7х=714
7х=714
х=714:7
х=102
2)23х-19х+5х=1827
9х=1827
х=1827:9
х=203