Question

Afla numărul necunoscut din egalitatile. (88-a)*2=18, (77-b)-25=13, (90:c):2=5.( d:8):6=1

Answer 1

(88-a)*2=18
 88-a=18:2  
88-a=9
a=88-9
a=79
(77-b)-25=13
(77-b)=13+25










77-b=38
b=77-38
b=39
(90:c):2=5
(90:C)=5*2
(90:c)=10

(d:8):6=1
(d:8)=1*6
(d:8)=6
d=6*8
d=48