Question

решите урвнение 75:(69-4x)=15

Answer 1

69-4х=75:15
69-4х=5
4х=69-5
4х=64
Х=64:4
Х=16

Answer 2

75:(69-4х)=15
69-4х=75:15
69-4х=5
-4х=5-69
-4х= -64
х=(-64):(-4)
х=16