Odpowiedź :
a)
[tex]14 + 3x = 23[/tex]
[tex]3x = 23 - 14[/tex]
[tex]3x = 9[/tex]
[tex]x = 9 \div 3 = 3[/tex]
b)
[tex]87 = 3x - 6[/tex]
[tex] - 3x = - 6 - 87[/tex]
[tex] - 3x = - 93[/tex]
[tex]x = ( - 93 )\div ( - 3) = 31[/tex]
c)
[tex]3x + 2 = 9[/tex]
[tex]3x = 9 - 2[/tex]
[tex]3x = 7[/tex]
[tex]x = 7 \div 3 = 2 \frac{1}{3} [/tex]
d)
[tex]5x - 6 = 4[/tex]
[tex]5x = 4 + 6[/tex]
[tex]5x = 10[/tex]
[tex]x = 10 \div 5 = 2[/tex]
e)
[tex]4x - 7 = 17[/tex]
[tex]4x = 7 + 17[/tex]
[tex]4x = 24[/tex]
[tex]x = 24 \div 4 = 6[/tex]
f)
[tex]52 = 2x - 6[/tex]
[tex] - 2x = - 6 - 52[/tex]
[tex] - 2x = - 58[/tex]
[tex]x = ( - 58) \div ( - 2) = 29[/tex]
g)
[tex]3x + 4 = 2[/tex]
[tex]3x = 2 - 4[/tex]
[tex]3x = - 2[/tex]
[tex]x = - \frac{2}{3} [/tex]
h)
[tex]6 - 2x = 2[/tex]
[tex] - 2x = 2 - 6[/tex]
[tex] - 2x = - 4[/tex]
[tex]x = ( - 4) \div ( - 2) = 2[/tex]
i)
[tex]5x - 8 = 12[/tex]
[tex]5x = 12 + 8[/tex]
[tex]5x = 20[/tex]
[tex]x = 20 \div 5 = 4[/tex]
j)
[tex]47 = 3x - 4[/tex]
[tex] - 3x = - 4 - 47[/tex]
[tex] - 3x = - 51[/tex]
[tex]x = ( - 51) \div ( - 3) = 17[/tex]
k)
[tex]4x + 2 = 10[/tex]
[tex]4x = 10 - 2[/tex]
[tex]4x = 8[/tex]
[tex]x = 8 \div 4 = 2[/tex]
l)
[tex]4 - 2x = - 10[/tex]
[tex] - 2x = - 10 - 4[/tex]
[tex] - 2x = - 14[/tex]
[tex]x = ( - 14) \div ( - 2) = 7[/tex]
m)
[tex]17 + 5x = 32[/tex]
[tex]5x = 32 - 17[/tex]
[tex]5x = 15[/tex]
[tex]x = 15 \div 5 = 3[/tex]