Question

ajuda!tenho prazo de entrega!​

Answer 1

Explicação passo a passo:

c) $5x-1=9\\5x=10\\x=\frac{10}{5}\\x=2$

d) $x-3=8\\x=11$

6) $4x+\frac{1}{2}=\frac{9}{2}\\4 + \frac{1}{2} = \frac{9}{2}\\\frac{9}{2} = \frac{9}{2}$

7a) $x+5=8\\x=3$

7b) $x-4=3\\x=7$

7c) $x+6=5\\x=-1$

7e) $x+9=-1\\x=-10$

7f) $x+28=11\\x=-17$

7g) $x-109=5\\x=114$

7h) $x-39=-79\\x=-40$

7i) $10 = x +8\\2 = x$

7j) $15 = x + 20\\-5 = x$

7k) $4 = x - 10\\14 = x$

7l)$7 = x + 8\\-1 = x$

7m) $0 = x + 12\\-12 = x$

7n)$-3=x+10\\-13=x$