Resolución:
a. 5x + 12 = 37 b. 9x + 7x + 24
5x = 37 - 12 9x - 7x = 24
5x = 25 2x = 24
x=5 x=12
c. 2x + 7 = 13 d. 8x - 19 = 45
2x = 13 - 7 8x= 45 + 19
2x = 6 8x= 64
x=3 x=8
e. x/4 + 7 = 32 f. 3= 8x -1
x + 28 = 128 -8x = -1 -3
x= 128 - 28 -8x = -4
x= 100 x=1/2
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Verified answer
Resolución:
a. 5x + 12 = 37 b. 9x + 7x + 24
5x = 37 - 12 9x - 7x = 24
5x = 25 2x = 24
x=5 x=12
c. 2x + 7 = 13 d. 8x - 19 = 45
2x = 13 - 7 8x= 45 + 19
2x = 6 8x= 64
x=3 x=8
e. x/4 + 7 = 32 f. 3= 8x -1
x + 28 = 128 -8x = -1 -3
x= 128 - 28 -8x = -4
x= 100 x=1/2