Question

me ajudem nas equaçoes

Answer 1

a.

5(n-2)-5=15

5n-10-5=15

5n=15+10+5

5n=30

n=30/5

n=6

b.

6(x+1)+2=14

6x+6+2=14

6x=14-6-2

6x=6

x=6/6

x=1

c.

2(z+4)-6=10

2z+8-6=10

2z=10-8+6

2z=8

z=8/2

z=4

d.

3(m+6)-12=12

3m+18-12=12

3m=12-18+12

3m=6

m=6/3

m=2

e.

2(n-7)+20=30

2n-14+20=30

2n=30+14-20

3n=24

n=24/3

n=8