Question

Resolvam as seguintes operações:


a) 520 = d.5

b) 20.a = 240

c) 32 = b/7

d) c/6 = 42

e) 210 = x.5 + 110

f) 180 = y.5 – 220

g) 220 = z/3 + 120

h) 350 = c/4 – 150

i) 450 = (4.g + 10).5

j) e = 43

k) h = 24.33

l) r = 36

m) k = 3125

Answer 1

a) 520 = d.5

d=104

b) 20.a = 240

a=12

c) 32 = b/7

b=224

d) c/6 = 42

c=252

e) 210 = x.5 + 110

x.5=100

x=20  

f) 180 = y.5 – 220

y.5=400

y=80

g) 220 = z/3 + 120

z/3=100

z=300

h) 350 = c/4 – 150

c/4=500

c=2000

i) 450 = (4.g + 10).5

400=20.g+50

20.g=450

g=22,5

j) e = 43

k) h = 24.33

h=792

l) r = 36

m) k = 3125