Question

indique a incógnita de cada equação

a) 5x + 12 = 34
b) y - 1 + 12 = 7y - 25
c) 9z - 5 = z + 12
d) 4m+ 8 = m -4​

Answer 1

a) 5x + 12 = 34
5x = 34 -12
5x = 22

b) y -1 + 12 = 7y -24
y -7y = -24 + 1 -12
6y = 35
y = 35/6
y = 5,83

c) 9z -5 = z + 12
9z -z = 12 + 5
8z = 17
z = 17/8
z = 2,125

d) 4m + 8 = m -4
4m -m = -4 -8
3m = -12
m = -4