467,285 views
15 votes
15 votes
1.5x - 7 + 3x = 20
(please show step by step)​

User ExactaBox
by
2.6k points

2 Answers

18 votes
18 votes

Answer:

x=6

Explanation:

1.5x-7+3x=20 step 1 add 1.5x to 3x

4.5x-7=20 step 2 add 7 on both sides

4.5x=27 step 3 divide 4.5 on both sides

x=6

User Dr Manhattan
by
2.4k points
13 votes
13 votes

Answer:

x = 6

Explanation:

1.5x - 7 + 3x = 20

Combine 1.5x and 3x to get 4.5x.

4.5x - 7 = 20

Add 7 to both sides.

4.5x = 20 + 7

Add 20 and 7 to get 27.

4.5x = 27

Divide both sides by 4.5.

x =
(27)/(4.5)

Expand
(27)/(4.5) by multiplying both numerator and the denominator by 10.

x =
(270)/(45)

Divide 270 by 45 to get 6.

x = 6

Hope it helps and have a great day! =D

~sunshine~

User Raymond Toh
by
3.1k points