Question

a) 2x + 3 =5
b) y - 4 = 11
c) 2b = 9
d) x + 10 =15
e) 5 + 15c = 20
f) 2z + 4 =8

Answer 1

Explicação passo-a-passo:

a) 2x + 3 = 5

2x = 5 - 3

x = 2/2

x = 1

b) y - 4 = 11

y = 15

c) 2b = 9

b = 9/2

b = 4,5

d) x + 10 = 15

x = 15 - 10

x = 5

e) 5 + 15c = 20

15c = 20 -5

c = 15/15

c = 1

f) 2z + 4 = 8

2z = 8 - 4

z = 4/2

z = 2

Bons estudos!