Question

va rog ajutatima dau coaroana plz...

Answer 1

5c) 2x*9=4*3
18x=12
x=12/18
e) 7/5 ÷ x=1
x=7/5

6b) x÷1/15=3/11
x=3/11* 1/15
x=3/(11*15)
x=3/165
c)35/2÷x=7/2
x=35/2÷7/2
x=35/2*2/7
x=5
d) 45/11÷x=15/4
x=45/11÷15/4
x=45/11*4/15 simplificam cu 15 si obtinem
x=12/11
e)x÷14=36/7
x=36/7 * 14
x=36*2
x=72
f)226/125÷x=339/125
x=226/125÷339/125
x=226/125*125/339 simplificam cu 125
x=226/339

9b) 1,5 (x+2/9)=2,25
x+2/9=2,25÷1,5
x+2/9=1,5
x=15/10-2/9
x=3/2-2/9 aducem la acelasi numitor comun si avem
x=27/18-4/18
x=23/18

c)x-1=7/4*9/14
x-1=9/8
x=9/8+1
x=9/8+8/8
x=17/8