Question

please answer these all questions very urgent ​

Answer 1

Answer:

What is the question, I don't understand.....

Answer 2

Answer:

(a) 13(x+1)=15

=3x+3=15

=3x+3-3= 15-3

=3x=12

=3x/2=12/3

=X=4

(b)7+3(x+5)=31

=7+3x +15=31

=22+3x=31

=3x=31-22=9

=x=9/3=3.

(c)3x+2(x+5)=40

=3x+2x+10=40

=5x+10=40

=5x+10-10=40-10

=5x=30

=5x/5=30/5

=x=6

(d)x=17-3(2x+1)

=x=17-6x-3

=x=14-6x

=x=-6x+14

=x+6x=-6+14+6x

=7x=14

(e)3(2x-4)=28-2x

=6-12=28-2x

=6x-12=2x+2

=6x-12+12=2x+28+12

=6x=-2x+40

=6x+2x=+2x+40+2x

=8x=40

=8x/8=40/8

=x=5