Question

va rog mult! ex 4,5 dau coroana

Answer 1

4)

a)x+5=8

x=8-5=3

b)a-10=2

a=2+10=12

c)12x=60

x=60:12=5

d)120:z=40

120=40z

z=120:40=3

e)3y-12=0

3y=12

y=12:3=4

5)

a)x+18=24

x=24-18=6

b)a+35=20

a=20-35=-15

c)8z=160

z=160:8=20

d)5y=18

5y:5=18:5

$y = 18 : 5 = \frac{18}{5}$

e)x:12=96

x=96•12=1152

f)t:6=100

t=100•6=600

g)9x-1=0

9x-1+1=0+1

9x=1

9x:9=1:9

$x = 1 : 9 = \frac{1}{9}$

h)4x-20=0

4x=20

x=20:4=5

Answer 2

x+5=8 - soluția e 3 , 8-5=3,
a-10= 2- soluția: 12, 10+2=12
3y-12- soluția: 4: 3×4=12
12x=60-solutia: 5: 60:12=5