Question

Dau coroana.1.Aflati valoarea necunoscutelor din exercitiile urmatoare: a:126=40 c:527=90 e:375=50 200x139=b+23108 700x623=d+150736 542x400=19238+f. 2.Aflati valoarea lui x in fiecare dintre egalitatile:a) x:7=10 x:8=11 b)x:5=9 x:7=8 c)x:8=7 x:9=8.

Answer 1

1.a=126*40
a=504                   

c:527=90
c=527*90
c=47.430

200*139=b+23.108
b+23.108=200:139
b+23.108=14
b=23.108-14
b=23.094

700*623=d+150.736
d+150.736=700*623
d+150.736=34.000
d=150.736-34.00
d=116.736

2.x=10*7
x=70

x=5*9
x=45

x=7*8
x=56

x=8*7
x=56

x=9*8
x=72

Sa te ajute.

542*400=19.238+f
19.238+f=542*400
19.238=216.800
f=216.800-19.238
f=19*7.662

x=11*8
x=88

astea care le-am adaugat