Question

rezolvati ecuatiile 4z-6=194, 35 +5a=95 , 8b+26=58, 3(2+x)=9 , (15-x):3=5 , 42:(y+4)=6

Answer 1

 4z-6=1944z=194+6
4z=200
z=200/4
z=50

35 +5a=955a=95-35
5a=60
a=60/5
a=12
8b+26=58, 8b=58-26
8b=32
b=32/8
b=4
3(2+x)=925+x=9/3
25+x=3
x=3-2
x-=1
 (15-x):3=515-x=5*3
15-x=15
x=15+15
x=30
42:(y+4)=6y+4=42/6
y+4=7
y=7-4
y=3