Question

HELP

7th Grade Math Solving Equations

4. a-9=15
5. n-9=13
6. b-8=9
7. X-5=16
8. n-6=17​

Answer 1

4.

a-9=15

or. a=15+9

or. a=24

5.

n-9=13

or. n=13+9

or. n=22

6.

b-8=9

or. b=9+8

or. b=17

7

x-5=16

or. X=16+5

or X=21

8

n-6=17

or. n= 17+6

or. n=23

Explanation:

minus sign changes into plus sign when changing sides