Question

Va rog exercitiul 5
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Answer 1

5x=-10

x=-10:5

x=-2

-3x=3^2

-3x=9

x=9:(-3)

x=-3

-6x=-2•3^3

-6x=-2•27

-6x=-54

x=-54:(-6)

x=9

-2^2•7^3=7^2•x

-4•343=49x

-1372=49x

x=-28

-2^2•3=-6x

-4•3=-6x

-12=-6x

X=2

(2+3)x=-15

5x=-15

X=-3

(79-84)x=-10

-5x=-10

x=2