Question

6. Теңдеулерді шеш.
а - 80 = 320 + 350
590 - х = 110 + 260
х+120 = 900 - 540
480 + b = 960 - 150​

Answer 1

( 1 )

$a-80=320+350\\\\a-80=670\\\\a=670+80\\\\a=750$

Проверка:

$a=750\\\\750-80=320+350\\\\670=670$

( 2 )

$590-x=110+260\\\\590-x=370\\\\x=590-370\\\\x=220$

Проверка:

$x=220\\\\590-220=110+260\\\\370=370$

( 3 )

$x+120=900-540\\\\x+120=360\\\\x=360-120\\\\x=240$

Проверка:

$x=240\\\\240+120=900-540\\\\360=360$

( 4 )

$480+b=960-150\\\\480+b=810\\\\b=810-480\\\\b=330$

Проверка:

$b=330\\\\480+330=960-150\\\\810=810$