Question

2. Solve the following equations:
(a) 2(x + 4) = 12 (b) 3(n-5) = 21
(d) - 4(2 + x) = 8 (e) 4(2-x) = 8
(c) 3(n-5) = -21​

Answer 1

Answer:

(a) 2(x+4)=12

=2x+8=12

2x=12-8

2x=4

(b) 3(n-5)=21

= 3n-15=21

= 3n=21+15

= 3n=36

= n=36/3

= n=12

(d) -4(2+x)=8

= -8+(-4x)=8

= -8-4x=8

= -4x=8+8

= -4x=16

= X=16/-4

=x=4/-1

= x= -4

(e) 4(2-x)=8

= 8-4x=8

= -4x=8-8

= -4x=0

= X=0*1/-4

X=-1/4

=X=¼

(c) 3(n-5)=-21

= 3n-15=-21

= 3n=-21+15

= 3n= -6

= n= -6÷3

n= -2

PLEASE MARK ME THE BRAINLIEST

Answer 2

Step-by-step explanation:

a) 2x+8=12

=2x=12-8

=x=4/2

=x=2

b) 3n-15=21

3n=21+15

n=36/3

n=12

c) 3n-15= -21

=3n= -21+15

=n= -6/3

=n= -2

-8-4x=8

-4x=8+8

4x= -16

x= -16/4

x= -4

e) 8-4x=8

-4x=8-8

-4x=0

4x=0

x=0/4

x=0.