Question

a)3X+18=30 b)4b+5=13 c)7x-11=10 D3b+4=19 e)9Y-15=21 f)2d+14=30 g)5X-12=18
h)6C-17=37 I)4/5X+1/2=3/4 j)X+4.5=9.5 k)Y-1/3=1/4 Alguien sabe las respuesta de estas ecuaciones y si pueden tambien la comprovasion plis

Answer 1

ponme un reyExplicación paso a paso:

a) -3x+18=30

-3x=-18+30

-3x=12

x=-4

b) 4a+5=13

4a=-5+13

4a=8

a=2

c)-7x-11=10

-7x=11+10

-7x=21

x=-3  

D)9y-15=21

9y=15+21

9y=36

y=4

E)-2d+14=30

-2d=-14+30

-2d=16

d=-8

espero te sirvaa n,n

Answer 2

Respuesta:

$3x + 18 = 30 \\ 3x = 30 - 18 \\ 3x = 12 \\ x = \frac{12}{3} \\ x = 4$

$4b + 5 = 13 \\ 4b = 13 - 5 \\ 4b = 8 \\ b = \frac{8}{4} \\ b = 2$

$7x - 11 = 10 \\ 7x = 10 + 11 \\ 7x = 21 \\ x = \frac{21}{7} \\ x = 3$

$3b + 4 = 19 \\ 3b = 19 - 4 \\ 3b = 15 \\ b = \frac{15}{3} \\ b = 5$

$9y - 15 = 21 \\ 9y = 21 + 15 \\ 9y = 36 \\ y = \frac{36}{9} \\ y = 4$

$2d + 14 = 30 \\ 2d = 30 - 14 \\ 2d = 16 \\ d = \frac{16}{2} \\ d = 8$

$5x - 12 = 18 \\ 5x = 18 + 12 \\ 5x = 30 \\ x = \frac{30}{5} \\ x = 6$

$6c - 17 = 37 \\ 6c = 37 + 17 \\ 6c = 54 \\c = \frac{54}{6} \\ c = 9$

$\frac{4}{5} x + \frac{1}{2} = \frac{3}{4} \\ \frac{4}{5} x = \frac{3}{4} - \frac{1}{2} \\ \frac{4}{5} x = \frac{1}{4} \\ x = \frac{1}{4} \div \frac{4}{5} \\ x = \frac{5}{16}$

$x + 4.5 = 9.5 \\ x = 9.5 - 4.5 \\ x = 5$

$y - \frac{1}{3} = \frac{1}{4} \\ y = \frac{1}{4} + \frac{1}{3} \\ y = \frac{7}{12}$