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a fost răspuns

Rezolvati ecuatiile:
a) x+1,3=2,5
b)2,87-x=1,07
c)3x+10,25=17,75
d)2x-7,51=12,25
e)4x+45,7=98,2
f)2,1•x-0,3=2,22
g)15-3,5•x=4,5
h2,5•(x+1,3)=10
i)(2,15+x):1,2=7,42
j)4,2x+3,4x=19
k)0,5•(2,7+x)=7,25
l)2,15x+6,14=7,43
m)1,35x-2,42:4=6,28
n)2,7•5,3-1,3•x=11,97
Dau coroana

Răspuns :

x+1,3=2,5 => x=2,5-1,3=1,2 2,87-x=1,07 =>2,87-1,07=x => x=1,80 3x +10,25 =17,75 => 3x=17,75-10,25=7,50 2x-7,51=12,25 => 2x=12,25-7,51 =>2x=4,74 =>x=4,74÷2=2,37 4x+45,7=98,2 =>4x=98,2-45,7=> 4x=52,5 =>x=52,5÷4=13,125

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