Question

va rog scrieti cum trebuie sa scriu in caiet

Answer 1

Hei! :)

$a) \ 2(x-4)\\x=5\\=> 2(5-4)=2*1=2\\\\b) 3:z\\z=6\\=> 3:6=0,5\\\\c)3x+1\\x=0,5\\3*0,5+1=1,5+1=2,5\\\\d)4x\\x=\frac{1}{2} \\4*\frac{1}{2}=2\\\\e)5(a+b)\\a=2, b=1,2\\5(2+1,2)=5*3,2=16\\\\f)7a+b\\a=\frac{3}{4} , b=\frac{3}{4} \\7*\frac{3}{4} +\frac{3}{4} =\frac{21}{4} +\frac{3}{4} =\frac{21+3}{4}=\frac{25}{4}$

Answer 2

Răspuns:

la a 2(x-4)=2*(5-4)=2*1=2

la c 3*0.5+1=1.5+1.0=2.5

la b doar daca schimbi ordinea adica z/3

la d 4x  4*1/2=4/2= 2(imparti 4 la 2|)

la e 5(a+b)= 5*(2.0+1.2)=5*3.2=16

la f 7a+b=3/4*7+3/4=21/4+3/4=24/4=6

Explicație pas cu pas: