Question

6,7*(7,9-y)=28,81

9,14 х-(3,78 х+2,87 х)=12,45

(6,9-5,52:0,63*0,85*((5-0,1+25):(3,7+0,05)

Answer 1

1)52,93-6,7y-28,81=0 24,12-6,7y=0 2)9,14x-6,65x-12,4=0 2,49x-12,4=0