Question

Ma gandesc la un nr.Îi a daughter 310 , a point dublez result at ultimate si obtain 820.La ce nr m-am g and it? Ma ajutai va rog frumos

Answer 1

(a+310)*2=820
a+310=820:2
         =410
a=410-310
a=100
SPER CA TE-AM AJUTAT

Answer 2

(x+310)*2=820
2x+620=820
2x=820-620
2x=200
x=200:2
x=100