1.a.(15:5)*(-3x-2)-5+49= b.Tentukan nilai x dari: 5x-13=3x+7

a. (15:5) (-3x-2) -5 + 49
= 3. -3x -2 -5 + 49
= -3x + 3. -2 -5 + 49
= -3x -6 -5 + 49
= -3x -11 + 49
= 3x + 38

b. 5x -13 = 3x + 7
5x -3x = 13 + 7
2x = 20
x = 20/2
x = 10

Smoga membantu :) ^ ^