Question

rezolvati in multimea numerelor intregi ecuatiile: a) |2x-3|=11 b)2 |2x+7|-9=17 c)3 (2x+1)+4|2x-1|=2(3x+4)+7


va rog eu mult! sa traiti :))​

Answer 1

Explicație pas cu pas:

2×-3=11

2×=11-3

×=8:2

×=4

(2×+7)-9=17

2×+7=17-9

2×=8+7

×=15:2

×=7,5

(2x+1)+4×(2x-1)=2×(3x+4)+7

2x+1+8x-4=6x+8+7

2x+8x-6x = 8+7-1

4x=14

x=3,5