Question

Resolva as equações:
a)x-5=8
b)3x+6=12
c)2=7y-5
d)5c+2=3-9

Answer 1

$x - 5 = 8 \\ x = 8 + 5 \\ x = 13 \\ \\ 3x + 6 = 12 \\ x = 12 - 6 \div 3 \\ x = 2 \\ \\ 2 = 7y - 5 \\ y = 2 + 5 \div 7 \\ y = 1 \\ \\ 5c + 2 = 3 - 9 \\ c = - 6 - 2 \div 5 \\ c = \frac{ - 8}{5}$