Question

Pt. Nina!
Te rog Nina!

Answer 1

a)26xX=13
x=-2
b)1.3x=1.69
x=1.69:1.3
x=1.3
c)Xx0.45=0.9
x=0.9x0.45
x=2

d)13.8xX=13.8
x=13.8:13.8
x=1

e)0.8xX=0.02
x=0.025

f)Xx12=23.5
x=23.5:12
x=1.958

g)3xX+15.2=17.02
3xX=17.02-15.2=
3xX=1.82
x=1.82:3
x=0.606

h)7x-7.14=39.2
7x=39.2-7.14
7x=32.06
x=32.06:7
x=4.58

x:3.5=2.14
x=3.5x2.14
x=7.49

j)4.5:x=0.09
x=4.5:0.09
x=50

k)x:0.4²=0.24
x:0.16=0.24
x=0.24x0.16
x=0.0384

l)(4.15+x)x10=23.4
4.15+x=23.4:10
4.15+x=2.34
x=4.15-2.34
x=-1.81
m)(2.03+x):10²=3.5
(2.03+x):100=3.5
2.03+x=3.5x100
2.03+x=350
x=350-2.03
x=347.97