Question

Ecuaciones de primer grado 10y=450, 7(×-13)=91, 3(×-2)=18, 3(×+2)+4=19, 2(3×+5)+3=25​

Answer 1

Explicación paso a paso:

10y = 450

y = 450 / 10

y = 45

7 (x - 13) = 91

7x - 91 = 91

7x = 91 + 91

7x = 182

x = 182 / 7

x = 26

3 (x - 2) = 18

3x - 6 = 18

3x = 18 + 6

3x = 24

x = 24 / 3

x = 8

3 (x + 2) + 4 = 19

3x + 6 + 4 = 19

3x + 10 = 19

3x = 19 - 10

3x = 9

x = 9 / 3

x = 3

2 (3x + 5) + 3 = 25

6x + 10 + 3 = 25

6x + 13 = 25

6x = 25 - 13

6x = 12

x = 12 / 6

x = 2