Question

Допоможіть будь ласка!!

Answer 1

Ответ:

Пошаговое объяснение:

1)  2*(0.4x-3)-5(0.2x-3)=8.84.

0,8x-6 - x+15 = 8.84;

-0.2x = 8.84-15+6;

-0.2x = -0.16;

x=(-0.16):(-0.2);

x=0.8.

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2)  0.4(1-2y) = 3(0.3y-5)+10.3;

0.4-0.8y=0.9y-15+10.3;

-1.7y = -15+10.3-0.4;

-1.7y=-5.1;

y=3.

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3)  4(0.4x-5)-3(0.2x+1)=-43.

1.6x-20-0.6x-3=-43;

x=-43+3+20;

x=-20.

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4)  9.3x-124.5=5(1.2x+1.5).

9.3x-124.5 = 6x+7.5;

3.3x = 124.5+7.5;

3.3x = 132;

x=40.