2006-10-05 07:24:40 · 17 answers · asked by brandywine614 1 in Science & Mathematics ➔ Mathematics
(-63)
(–8(7x + 4) + 7(8x – 5) = x – 4
-8*7x-8*4+7*8x+7(-5)=x-4
-56x-32+56x-35=x-4
-32-35=x-4
-67=x-4
-67+4=x
x=-67+4
x=-63)
2006-10-05 08:14:59 · answer #1 · answered by Anonymous · 0⤊ 0⤋
-8(7x + 4) + 7(8x - 5) = x - 4
-56x + -32 + 56x - 35 = x - 4
-67 = x - 4
+ 4 = x
Your final answer is: x = -63
2006-10-05 14:44:36 · answer #2 · answered by charity 2 · 0⤊ 0⤋
first you want to multiply the -8 and the 7 through the parenthesis: (remember -*- = + and -*+ = -)
–8(7x + 4) + 7(8x – 5) = x – 4
-56x -32 + 56x - 35 = x - 4
the 56x cancel:
-32 - 35 = x - 4
combine like terms:
-67 = x - 4
add 4 to both sides of the equation:
-63 = x
or
x = -63
2006-10-05 14:31:53 · answer #3 · answered by Anonymous · 1⤊ 0⤋
-8(7x + 4) + 7(8x - 5) = x - 4
-56x - 32 + 56x - 35 = x - 4
-67 = x - 4
x = -63
2006-10-05 19:49:00 · answer #4 · answered by Sherman81 6 · 0⤊ 0⤋
-8(7x+4) + 7(8x-5)=x-4 distributive property
-56x-32+56x-35=x-4 combine like terms
-32-35=x-4 (-56 and 56 cancle each other out)
-67=x-4
-63=x
This is how I would do it!
2006-10-05 17:14:42 · answer #5 · answered by Brandi S 1 · 0⤊ 0⤋
-8(7x + 4) + 7(8x - 5) = x - 4
-56x -32 + 56x -35 = x - 4 (combine terms)
-67 = x - 4 (add 4 to both sides)
x = -63
QED
2006-10-05 16:26:18 · answer #6 · answered by CSUFGrad2006 5 · 0⤊ 0⤋
-8(7x +4) + 7(8x -5 ) = x -4
-48 x - 32 + 48 x - 35 = x - 4
now -48 x + 48 x = 0, so,
-32 -35 +4 = x
hence x = -63 (check the final calc...)
2006-10-05 14:30:24 · answer #7 · answered by cuteniceprty 2 · 0⤊ 0⤋
-8(7x+4)+7(8x-5)=x-4
-56x-32+56x-35=x-4
both -56x&56x cancel out which leaves you with
-32-35=x-4, add 32&35 and keep the-sign
-67=x-4, add 4 to both sides, fours cancel out on the right
so -67+4=-63,
-63=x is your answer
2006-10-05 14:39:58 · answer #8 · answered by drea_1078 2 · 0⤊ 0⤋
-8(7x+4)+7(8x-5)=x-4
-56x-32+56x-35=x-4
-32-35+4=x
-63=x
2006-10-05 14:29:03 · answer #9 · answered by Yahooracle 3 · 0⤊ 0⤋
-8(7x+4)+7(8x-5)=x-4
-56x-32+56x-35=x-4
-32-35=x-4
x=4-32-35=-63
2006-10-05 14:28:21 · answer #10 · answered by yupchagee 7 · 1⤊ 0⤋