1. -8(3+x)+x=4 2. -6=-9(7+x)+4x 3. -8x+4(7+8x)=4x+7 - вопрос №87140961834269743847847427945 от Вичка03 30.04.2022 10:42

Question

Математика: 1. -8(3+x)+x=4 2. -6=-9(7+x)+4x 3. -8x+4(7+8x)=4x+7 4. -x+2(7-9x)=x-4 5. -7x+9(2+x)=-4x+3 6. -x+4(7-x)=-7x+5 !

Вичка03 · Answer

1. -8(3+x)+x=4-24 - 8x + x = 4-24 - 7x = 47x = -24-47x= -28x=-28:7x =-42. -6=-9(7+x)+4x-63 - x + 4x = -6-63 + 3x = -63x = -6 + 633x = 57x = 57:3x = 193. -8x+4(7+8x)=4x+7-8x + 28 + 32x = 4x + 724x + 28 = 4x + 724x - 4x = 7 - 2820x = -21x = -21 : 20x = -1,054. -x+2(7-9x)=x-4-x + 14 - 18x = x - 4-19x + 14 = x - 4x + 19x = 14 + 420x = 18x = 18 : 20x = 0,95. -7x+9(2+x)=-4x+3-7x + 18 + 9x = -4x + 32x + 18 = -4x + 32x + 4x = 3 - 186x = -15x = -15 : 6x = -2,56. -x+4(7-x)=-7x+5-x + 28 - 4x = -7x + 5-5x +...