3 years ago

This question is confusing. Please help me!

Mathematics

2 answers:

velikii [3]3 years ago

7 0

Answer:

x = 18

Step-by-step explanation:

Given:

a = 2x +3
b = 4x - 7

Finding x for which 3b = 5a:

3b = 5a

3(4x - 7) = 5(2x + 3)
12x - 21 = 10x + 15
12x - 10x = 15 + 21
2x = 36
x = 36/2
x = 18

bogdanovich [222]3 years ago

6 0

Answer:

x = 18

Step-by-step explanation:

Plug in 4x-7 for b and 2x+3 for a in 3b = 5a

3(4x-7) = 5(2x +3)

Solve for x:

12x-21 = 10x+15

2x = 36

x=18

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