Question

perimetrul unei gradini este 32m,afla pe x daca lungimea este 4+3x ,iar latime,x+6

Answer 1

P=2(L+l)
32=2(4+3x+x+6)
32÷2=10+4x
16-10=4x
6=4x
x=4/6 sau x=4÷6

Answer 2

P =32 m
L =4+3x
l =x+6
P =2L+2 l
32 =2(4+3x) +2(x+6)
32 =8+6x +2x+12
32-8-12 =8x
8x =12
x =1.5 m
L =4+3x =4+3*1.5 =4+4.5 =8.5 m
l =x+6 =1.5+6 =7.5 m
v  ;  2*8.5+2*7.5 =17+15 =32 m