pierwsze 3 z lewej:
[tex]3x+11=41 /-11\\3x = 30 /:3\\x = 10[/tex]
[tex]-x+2=8 /-2\\-x = 6 /:(-1)\\x = 6[/tex]
[tex]-x+5=-2 /-5\\-x = -7 /:(-1)\\x = 7[/tex]
3 z prawej:
[tex]g) \\-2x-7=11 /+7\\-2x = 18 /:(-2)\\x = -9\\\\h) \\-5x + 3 = -12 /-3\\-5x = -15 /:(-5)\\x = 3\\\\i)\\-1,5x + 2 = 9,5 /-2\\-1,5x = 7,5 /:(-1,5)\\x = 5[/tex]
Na srodku:
[tex]e)\\3(x+3)=2(x+4)+x+1\\3x+9=2x+8+x+1 \\3x-2x-x=8+1-9\\0 = 0[/tex]
[tex]f) \\4(3x+2)+5(2x+3) = -(2x+13)\\12x+8+10x+15=-2x-13\\12x+10x+2x=-13-8-15\\24x=-36\\x = \frac{-36}{24} = -1,5[/tex]
[tex]g) \\4(x-2)-2(x-4)=5(x+1)-3x\\4x-8-2x+8=5x+5-3x\\4x-2x-5x+3x=5+8-8\\-3x=5 /:(-3)\\x = -\frac{5}{3} = -1\frac{2}{3}[/tex]
[tex]h)\\2(x-4)=2(2x-1)+6(x+1)\\2x-8=4x-2+6x+6\\2x-4x-6x=-2+6+8\\-8x=12\\x = - \frac{12}{8} = -1\frac{4}{8} = -1,5[/tex]
