Question

a) 2·(3x+5)+5=51 b) 4·(4x-15)+3=7 c) 181+x:16-19·8=60 d) 5·[8·(7x-16)-17]-16=99
e) 3·{5·[7·(4x-10)-13]-3}+1=7 f)69+84:6-x·2=36

Rezolvati prin multimea nr. naturale

Answer 1

a)2•(3x+5)+5=51-5
2•(3x+5)=46÷2
3x+5=23-5
3x=18÷3
x=6
b)4•(4x-15)+3=7-3
4•(4x-15)=4÷4
4x-15=1+15
4x=16÷4
x=4
celelalte nu leam făcut pentrucă mie lene