Question

10) Resolva as equaçôes:

a) x-3=19
b)x+7=10
c)2x-4=12
b)-10+2x=40

me ajudem por favor urgente????​

Answer 1

Explicação passo-a-passo:

a)

$x-3=19\\x=19+3\\x=22$

b)

$x+7=10\\x=10-7\\x=3$

c)

$2x-4=12\\2x=12+4\\2x=16\\x=\frac{16}{2}\\x=8$

d)

$-10+2x=40\\2x=40+10\\2x=50\\x=\frac{50}{2} \\x=25$

Answer 2

Explicação passo-a-passo:

a)

$x = 19 + 3 \\ x = 22$

b)

$x = 10 - 7 \\ x = - 3$

c)

$2x-4=12 \\ 2x = 12 + 4 \\ 2x = 16 \\ x = \frac{16}{2} \\ x = 8$

d) 2x= 40+10

2x = 50

x = 50/2

x = 25