Question

Lesson 2-3

Solve each equation. (MUST SHOW ALL STEPS for credit)
*18. 20 + g + g = 14 19. 7 + 4x – 9 = –6 20. –12 = –5 – 6n + 11

*21. 8 = 8p + 13 – 3p *22. 4(–2d – 3) = 12 23. –2(a + 6) = –22

Answer 1

18. g= -3

19. x= -1

20. n= 3

21. p= -1

22. d= -3

23. a= 5

Explanation:

how to solve the variable (using 18 as an example)

step 1: simplify both sides of the equation.

20+g+g=14

(g+g)+(20)=14(combine like terms)

2g+20=14

2g+20=14

step 2: subtract 20 from both sides.

2g+20−20=14−20

2g=−6

step 3: divide both sides by 2.

2g/2 = -6/2