Question

$a)5x + 3x = 16 \\ b)x + x + 8 = 54 \\ c)7x - 2x - 4 = 11 \\ d)7x - 2 - 5x = 18 \\ e)5x = 12x + 49 \\ f)16 + 8y = 3y + 81 \\ g)20 - 8x = - 19 - 21x \\ h) - 18 + 2x + 6 = 7x - 12 - 8x \\ i)5x + 4 = 3x - 2x + 8 \\ j)4x + 10 = 3x - 5$
me ajudem por favor

Answer 1

a) 5x +3x=16
8x=16
x=16/8
x=2

b)x+x+8=54
x+x=54-8
2x=46
x=46/2
x=23

c)7x-2x-4=11
7x-2x=11-4
5x=7
x=7/5

d)7x-2-5x=18
7x-5x=18+2
2x=20
x=20/2
x=10


e) 5x=12x+49
5x-12x=49
-7x=49 ×(-1)
7x =49
x=49/7
x=7


f)16+8y=3y+81
8y-3y=81-16
5y=65
y=65/5
y=13