Используя результаты предыдущего действия, решите уравнение: 7(13а+23)+4(31-17а)=331​

Ответ:

To solve the equation 7(13a + 23) + 4(31 - 17a) = 331, we need to distribute the terms and simplify.

Starting with the left side of the equation:

7(13a + 23) + 4(31 - 17a)

= 7 * 13a + 7 * 23 + 4 * 31 - 4 * 17a

= 91a + 161 + 124 - 68a

Combining like terms:

= (91a - 68a) + (161 + 124)

= 23a + 285

Now we have the simplified left side of the equation: 23a + 285.

Setting it equal to 331:

23a + 285 = 331

To isolate the variable, we subtract 285 from both sides:

23a = 331 - 285

23a = 46

Finally, we divide both sides by 23 to solve for a:

a = 46/23

a = 2

Therefore, the solution to the equation is a = 2

Пошаговое объяснение: