Question

DACĂ MĂ AJUTAȚI DAU COROANA

Answer 1

a)7•x<42

$x < \frac{42}{7}$

x<6

b)x:13<2

x<2•13

x<26

c)2(x-2)≤18

x-2≤$\frac{18}{2}$

x-2≤9

x≤9+2

x≤11

d)3(x+3)≤21

x+3≤$\frac{21}{3}$

x+3≤7

x≤7-3

x≤4

e)2x+146≤3•124

2x+146≤372

2x≤372-146

2x≤226

x≤$\frac{226}{2}$

x≤113

f)5x+10•16≤2•(16+19)+285

5x+10•16≤2•35+285

5x+160≤70+285

5x+160≤355

5x≤355-160

5x≤195

x≤$\frac{195}{5}$

x≤39

g)3x+12•18≤3•(25+16)+23

3x+12•18≤3•41+23

3x+216≤123+23

3x+216≤146

3x≤146-216

3x≤-70

x≤$- \frac{70}{3}$