Question

5x - 20 = 240

17x-1=15x+3

7x=4x+5

9x-7=5x+13






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Answer 1

Explicação passo-a-passo:

5x - 20 = 240

5x = 240 + 20

5x = 260

x = 52

17x - 1 = 15x + 3

17x - 15x = 3 + 1

2x = 4

x = 2

7x = 4x + 5

7x - 4x = 5

3x = 5

x = 5/3

9x - 7 = 5x + 13

9x - 5x = 13 + 7

4x = 20

x = 5