Question

Determinato numarul natural x care verifica egalitatiile:

a) x+89=155
b)2•x+23=91
c)327-3•x=15+48
d)15+(x+2)+21=47
e)2•x+37=79-14
f)32+(2•x-5)=63+14

•= inmultire
Helpppp

Answer 1

x+89=155
x=155-89
x=66

2x+23=91
2x=68
x=34

327-3x=15+48
3x=327-63
3x=264
x=88

15+(x+2)+21=47
x+2=47-36
x+2=11
x=9

2x+37=79-14
2x=28
x=14

32+(2x-5)=63+14
2x-5=78-32
2x=50
x=25

Answer 2

a) x+89=155
x=155-89=66

b)2•x+23=91
2•x=91-23
2•x=68
x=68:2=34

c)327-3•x=15+48
3•x=327-15-48
3•x=264
x=264:3=88

d)15+(x+2)+21=47
x+2+36=47
x=47-36-2=9

e)2•x+37=79-14
2•x=65-37
2•x=28
x=28:2=14

f)32+(2•x-5)=63+14
2•x-5=77-32
2•x=45+5
2•x=50
x=50:2=25