Question

a)x+64=81 b) 204+×=57
c)×-89=130
d)149-×=100
e)49-×=9
f)7×=490
g)x×32=128
h)x÷15=11
i)225÷×=9
j) x^(7)=11^(7)
k) 2^(x)=64
l) 9^(x)=3^(4)
cineva să mă ajute repede​

Answer 1

a) x+64=81=>x = 81-64=> x = 17

b) 204+x= 57 => x = 204-57=> x = 147

c) x-89=130=>x=130+89=>x=219

d) 149-x=100

x=149-100

x=49

e) 49-x=9

x=49-9

x=40

f) 7x = 490=>x = 490:7=> x = 70

g) x•32=128=>x=128:32=>x=4

h) x:15=11 => x=15•11=>x = 165

i) 225:x=9=> x = 225:9=> x = 25

j) x la puterea 7 = 11 la puterea 7 => x = 7

k) 2 la puterea x = 64

x = 6

l) 9 la puterea x = 3⁴

3⁴=81

9 la puterea x = 81

x = 2