3 years ago

7x - 20 = 2x - 3(3x + 2)

Mathematics

2 answers:

olga nikolaevna [1]3 years ago

6 0

Answer:

x=1

Step-by-step explanation:

7x - 20 = 2x - 3(3x + 2)

Distribute

7x -20 = 2x -9x -6

Combine like terms

7x-20 =-7x -6

Add 7x to each side

7x+7x-20 =-7x+7x -6

14x -20 = -6

Add 20 to each side

14x-20+20 =-6+20

14x = 14

Divide by 14

14x/14=14/14

x=1

svp [43]3 years ago

5 0

Answer:

7x-5x=2x

2x-20=3×2

3×2=6

6÷2=3

3+20=203

x=23

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