Ответы
Ответ:
Пошаговое объяснение:
4x + 5 = 2x - 7
4x - 2x = -7 - 5
2x = -12
x = -12:2
x = -6
=============
5x - 7 = 13
5x = 13+7
5x = 20
x = 20:5
x = 4
========
3(x + 2) = 2(x+2)
3x + 6 = 2x + 4
3x - 2x = 4 - 6
x = -2
=============
2x - 4 = 8 + 2x
2x - 2x = 8 + 4
0 = 12
0 ≠ 12
нет решений
================
4x + 6 = 2(2x + 3)
4x + 6 = 4x + 6
4x - 4x = 6 - 6
0 = 0
x є (-∞ ; ∞)
уравнение имеет множество решений
=================
3x + 4 = 7x - 8
7x - 3x = 4 + 8
4x = 12
x = 12:4
x = 3
============
2x - 3 = 10
2x = 10+3
2x = 13
x = 13:2
x = 6,5
============
2(x + 1) = 3(x + 1)
2x + 2 = 3x + 3
3x - 2x = 2 - 3
x = -1
=================
3x - 5 = 3 + 3x
3x - 3x = 3 + 5
0 = 8
0 ≠ 8
нет решений
==================
3x + 6 = 3(x + 2)
3x + 6 = 3x + 6
3x - 3x = 6 - 6
0 = 0
x є (-∞ ; ∞)
уравнение имеет множество решений
===========================================