Question

potr favor me ajudem A)4x-7=2x+1 B)9x+3+3x=15 C)16x-12=12x+3 D)4x+9=3x-2 pvfr urgentemente ​

Answer 1

a) 4x - 7 = 2x + 1

4x - 2x = 1 + 7

2x = 8

x = 8/2

x = 4

b)9x + 3 + 3x = 15

9x + 3x = 15 - 3

12x = 12

x = 1

c)16x - 12 = 12x + 3

16x - 12x = 3 + 12

4x = 15

x = 15/4

d)4x + 9 = 3x - 2

4x - 3x = - 2 - 9

x = - 11

Answer 2

$a)4x - 7 = 2x + 1 \\ 4x - 2x = 1 + 7 \\ 2x = 8 \\ x = \frac{8}{2} \\ x = 4$

$b)9x + 3 + 3x = 15 \\ 9x + 3x = 15 - 3 \\ 12x = 12 \\ x = \frac{12}{12} \\ x = 1$

$c)16x - 12 = 12x + 3 \\ 16x - 12x = 3 + 12 \\ 4x = 15 \\ x = \frac{15}{4}$

$d)4x + 9 = 3x - 2 \\ 4x - 3x = - 9 - 2 \\ x = -11$