Question

Ma ajutati si pe mine la exercitile 100x{a-70}=400 si {18+41x2}+500:a-25x2=150

Answer 1

notam( a-70)=b
100xb=400
b=400:100
b=4
a-70=4; a=74
100x(74-70)=400

(18+41x2)+500:a-25x2=150
(18+82)+500:a-50=150
100+500:a-50=150
500:a=150-100+50
500:a=100
a=500:100
a=5

Answer 2

( a-70)=b
100xb=400
b=400:100
b=4
a-70=4; a=74
100x(74-70)=400

(18+41x2)+500:a-25x2=150
(18+82)+500:a-50=150
100+500:a-50=150
500:a=150-100+50
500:a=100
a=500:100
a=5