Răspuns :
a) 2x+10=4
=> 2x = 4-10
=> 2x = - 6
=> x = - 3
b) 3-x-5 = 2-x+7
=> -2-x = 9-x
=> -2-9 = -x+x
=> -11=0 FALS. -> nu are soluții.
a) 2x+10=4
=> 2x = 4-10
=> 2x = - 6
=> x = - 3
b) 3-x-5 = 2-x+7
=> -2-x = 9-x
=> -2-9 = -x+x
=> -11=0 FALS. -> nu are soluții.