Question

Determinați nr natural x care verifica egalitățile

a) 2*x+23=29
b) 327-3*x=15+48
c) 15+(x+2)+21=47
d) 2*x+37=79-14
e) 32+(2*x-5)=63+14. Va rog e urgent . Cu plan de rezolvare

Answer 1

a)2×x+23=29
2×x=29-23
2×x=6
x=6:2
x=3
b)327-3×x=15+48
327-3×x=63
3×x=327-63
3×x=264
x=264:3
x=88
c)15+(x+2)+21=47
15+(x+2)=47-21
15+(x+2)=26
x+2=26-15
x+2=11
x=11-2
x=9
d)2×x+37=79-14
2×x+37=65
2×x=65-37
2×x=28
x=28:2
x=14
e)32+(2×x-5)=63+14
32+(2×x-5)=77
(2×x-5)=77-32
(2×x-5)=45
2×x=45+5
2×x=50
x=50:2
x=25