Question

a) 17x - 1 = 15x +3
b) 7x = 4x + 5
C)9x-7=5x+13
d)6x=2x+180​

Answer 1

Resposta:

a)

b)

c)

d)

Explicação passo-a-passo:

a)

$17x-1=15x+3\\17x-15x=3+1\\2x=4\\x=2$

b)

$7x=4x+5\\7x-4x=5\\3x=5\\x=\frac{5}{2}$

c)

$9x-7=5x+13\\9x-5x=13+7\\4x=20\\x=5$

d)

$6x=2x+180\\6x-2x=180\\4x=180\\x=45$