1) -2(х+5)+3=2-3(х+1) - вопрос №125323121435010 от лисичка23456 28.02.2021 06:41

Question

Математика: 1) -2(х+5)+3=2-3(х+1)

лисичка23456 · Answer

-2(x + 5) + 3 = 2 - 3(x + 1)
-2x - 10 + 3 = 2 - 3(x + 1)
-2x-10 + 3 = 2 - 3(x + 1)
-2x-7 = 2 - 3(x + 1)
-2x - 7 = 2-3(x + 1)
-2x - 7 = 2-3x - 3
-2x - 7 = 2 - 3x-3
-2x - 7 = -1 - 3x
-2x - 7 = -1 - 3x
-2x - 7 = -3x - 1
-2x - 7 = -3x - 1
-2x - 7 + 7 = -3x - 1 + 7
-2x = -3x + 6
-2x = -3x + 6
-2x + 3x = -3x + 6 + 3x

x=6