algebra
2006-12-07 08:46:39 · 14 answers · asked by Mayra M 1 in Science & Mathematics ➔ Mathematics
7x + 28 - 10x + 20
48 - 3x
x = 48 /3 = 16
2006-12-07 08:50:18 · answer #1 · answered by the tourist 2 · 2⤊ 1⤋
X=-16 ; 7(X+4)-5(2X-4)
7X+28 - 10X + 20
7X+48 - 10X
48+-3X
-3X= -48
-48/-3 =16
2006-12-07 08:56:07 · answer #2 · answered by smitty4626 3 · 1⤊ 0⤋
Distributive property:
7x+28-10x+20
Rearrange the values:
7x-10x+28+20
Simplify:
-3x+48
Take out a negative 3:
-3(x-16)
x=16
2006-12-07 09:32:52 · answer #3 · answered by Anonymous · 0⤊ 0⤋
7(x+4)-5(2x-4) distribute 7 & -5
7x+28-10x+20 collect like terms
-3x+48
2006-12-07 08:48:55 · answer #4 · answered by yupchagee 7 · 1⤊ 1⤋
7(x+4)-5(2x-4)
7x+28-10X+20
-3x+48 This is your answer.
2006-12-07 08:54:46 · answer #5 · answered by MariChelita 5 · 1⤊ 1⤋
OK...
As there are brackets you must do these first, remember BO/IDMAS, Brackets, Of/Indices, Division, Multiplication, Addition, Subtraction. These are in the order of which they should be completed. x+4 = 4x. 2x-4 = 4-2x. 7-5 = 2. So 4x-2x+2 is the answer. This is the right answer because, beware, in algebra, you barely ever get complete, definite answers.
2006-12-07 08:55:28 · answer #6 · answered by Anonymous · 0⤊ 2⤋
(5x^2 + 6x + 4)(7x^2 + 2x - 4) 5x^2(7x^2 + 2x - 4) + 6x(7x^2 + 2x - 4) + 4(7x^2 + 2x - 4) 35x^4 + 10x^3 - 20x^2 + 42x^3 + 12x^2 - 24x + 28x^2 + 8x - sixteen 35x^4 + 10x^3 + 42x^3 - 20x^2 + 12x^2 + 28x^2 - 24x + 8x - sixteen 35x^4 + 52x^3 + 2x^2 - 16x - sixteen
2016-12-13 04:44:31 · answer #7 · answered by ? 3 · 0⤊ 0⤋
7x+28-10x+20
=-3x+48
2006-12-07 08:48:50 · answer #8 · answered by raj 7 · 1⤊ 1⤋
7(x+4)-5(2x-4)
7x+28-10x-20
-3x+48
2006-12-07 08:59:05 · answer #9 · answered by Anonymous · 0⤊ 2⤋
7x+28 -10x+20
7x+(-10x)= -3x
28+20= 48
-3x+48 <== it always helped me to write down everysingle step
2006-12-07 08:53:02 · answer #10 · answered by Anonymous · 1⤊ 1⤋