Question

Descubra o valor dos incógnitas satisfazendo cada igualdade a 4x + 2 = 36 B 9 x = 6x + 12 c5×- 1 = 3x + 11 de 2x + 8 = 11 x + 13 é 5 e + 2 = 8 Y - 4 F4 x - 2 = 3x + 4

Answer 1

Resposta:

a)

$4x+2=36\\4x=36-2\\4x=34\\x=\frac{34}{4}\\ x=8,5=\frac{17}{2} =8\frac{1}{2}$

b)

$9x=6x+12\\9x-6x=12\\3x=12\\x=\frac{12}{3}\\ x=4$

c)

$5x-1=3x+11\\5x-3x=11+1\\2x=12\\x=\frac{12}{2}\\x=6$

d)

$2x+8=11x+13\\2x-11x=13-8\\-9x=5\\x=-\frac{5}{9}$

e)

$5y+2=8y-4\\5y-8y=-4-2\\-3y=-6\\y=\frac{6}{3}\\y=2$

f)

$4x-2=3x+4\\4x-3x=4+2\\x=6$