Nilai x dari 7(2x+5)=4x-15 adalahA.5B.-5C.-2D.2​

7(2x+5)=4x-15

14x+35 = 4x-15

14x-4x = -15-35

10x = -50

x = -50/10

x = -5

Jawabannya B

Penyelesaian :

7 (2x+5) = 4x – 15

→ 14x + 35 = 4x – 15

→ 35 + 15 = 4x – 14x  

→ 50 = – 10x

→ 10x = – 50

→  x = –  50/10

→ x = – 5   (B)