Question

resolver cada ecuacion y verifica la solucion
a).5x+20=65
b).8z-14+3z=19
c).m+3/5=11
d).1/4n-5/8= -1/24

Answer 1

A.5x+20=65
5x=65-20
5x=45
X=45/5
X=9

Comprobacion
5.9+20=65
45+20=65
65=65

B.8z-14+3z=19
8z+3z=19+14
11z=33
Z=33/11
Z=3

Comprobacion
8.(3)-14+3(3)=19
24-14+9=19
10+9=19
19=19

C.m+3/5=11
M=11-3/5
M=52/5

Comprobacion
52/5+3/5=11
55/5=11
11=11

D.1/4n-5/8=-1/24
1/4n=-1/24+5/8
1/4n=(-1+15)=24
1/4n=14/24
1/4n=7/12
N=7/12:1/4
N=28/12
N=14/6
N=7/3

Comprobacion
1/4.7/3-5/8=-1/24
7/12-5/8=-1/24
(14-15)/24=-1/24
-1/24=-1/24

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