Question

Va dau coronita… ajutati-ma va rooog

Answer 1

a)
x+7,5≤11
x≤11-7,5
x≤3,5
x∈{0,1,2,3}

b)
x-4,27≥6,23
x≥6,23+4,27
x≥10,5
x∈{11,12,13,................∞}

c) 81-x≥75,3
81-75,3≥x
x≤5,7
x∈{0,1,2,3,4,5}

d) 11,3-x<4,3
11,3-4,3<x
x>7
x∈{8,9,10,11..................∞}

e)5*2,4+x<15
12+x<15
x<15-12
x<3
x∈{0,1,2}

f)5x≤20,5
x≤20,5:5
x≤4,1
x∈{0,1,2,3,4}

g) x:3≤12,6
x≤12,6x3
x≤37,8
x∈{0,1,2,3,......37}

h) 18,32+2x<20,4
2x<20,4-18,32
2x<2,08
x<2,08:2
x<1,04
x=0

i) 2,9*1,5≥x+2
4,35-2≥x
2,35≥x
x≤2,35
x∈{0,1,2}

j) 1,6*10+x≤105,35:5
16+x≤21,07
x≤21,07-16
x≤5,07
x∈{0,1,2,3,4,5}

k) 8²:4²-0,64≥x+2,73
64:16-0,64≥x+2,73
4-0,64≥x+2,73
3,36-2,73≥x
0,63≥x
x≤0,63
x=0