0.4 * (6x - 3 ) = - 3.6x;(- 4 z) * 3 = 1.4 - 5z

Question

0.4 * (6x - 3 ) = - 3.6x;
(- 4 z) * 3 = 1.4 - 5z

Answer 1

0,4*(6х-3)=-3,6х
2,4х-1,2=-3,6х
2,4х+3,6х=1,2
6х=1,2
х=1,2:6
х=0,2

(-4z)*3=1.4-5z
-12z=1.4-5z
-12z+5z=1.4
-7z=1.4
z=1.4:(-7)
z=-0.2

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