Question

repede pls
determinati , in fiecare caz,numerele naturale x, stiind ca :
i)5·x=75
j)x·6=144
k)2·4·x=320
l)5·x:7=175
m)24:(4·x)=3
solutie: 4x=24:3 ⇔4x=8⇔x=8:4⇔x=2
n)144:(2x)=6


2)rezolvati ecuatiile
a)3(4+2·x)=42
solutie, 4+2x=42:3⇔2x=14-4⇔2x=10, deci x=5
b) (23-x):6=3
C)5·(3·x-9)=60
d) (23-5·x):9=2
e) 24:(5-x)=6
f 32:(13-5·x)=5
g) 3·x-15:3=19+3
h 5·x=21:7=4+13
i 13-14:x=18-7

Answer 1

Ai răspuns pe foaie.