Question

реши уравнения
a-15*30=320
150*x*3=1800
12090-x=3090/30

Answer 1

a-15*30=320 a=320+450 a=770 150*x*3=1800 450x=1800 X=1800/450 X=4 12090-x=3090/30 12090-x=103 X=11987