Va rog ajutati-ma ! Este urgent ! Multumesc !

Va Rog Ajutatima Este Urgent Multumesc class=

Răspuns :

a)

[tex] 5(x+2)-4x+3=-3(x+1)
\\5x+10-4x+3=-3x-3
\\x + 13 = -3x-3
\\4x = -16
\\x = -4 [/tex]


b)

[tex] 4-(-3)[(-11)x+(-13)*(7)]:(-18) = 10
\\ 4+3(-11x-91):(-18) = 10
\\ 3(-11x-91):(-18) = 6
\\ 3(-11x-91) = -108
\\-11x-91 = -36
\\-11x = 55
\\x = -5 [/tex]


c)


[tex] 7x-3(x+1)=2x+15 \\7x-3x-3=2x+15 \\4x-3=2x+15 \\2x=18 \\x=9[/tex]


d)


[tex]2*[5(x+2)+9]=68 \\2*(5x+10+9)=68 \\5x+19=34 \\5x = 15 \\x = 3[/tex]


e)


[tex]47-5(x+2)=3(x+5)-10 \\47-5x-10=3x+15-10 \\-5x+37=3x+5 \\-2x=-32 \\x=16[/tex]