Question

Afla valoarea lui X din fiecare relație data. X+15*15=500-80-60*2. 136+107-14+x=248.113*5+x=300*2.

Answer 1

x+15×15=500-80-60×2⇒
x+225=500-80-120⇒
x+225=300⇒x=300-225⇒x=75
136+107-14+x=248⇒
243-14+x=248⇒
229+x=248⇒
x=248-229⇒x=19
113×5+x=300×2⇒
565+x=600⇒
x=600-565⇒x=35
succes