-5(x + 4) > 3(x - 4)
2007-11-18 01:16:32 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
-5(x + 4) > 3(x - 4)
ok i help you,
-5(x + 4) > 3(x - 4)
simplify it,
-5x -20 > 3x -12
combined like terms,
-5x -3x > -12 + 20
solve for x,
-8x > 8
-8x / -8 > 8 / -8
x < -1 is the answer.
remember when you are dividing or multipliying -1 of inequalities, the inequalities will chage.
2007-11-18 01:25:18 · answer #1 · answered by Anonymous · 1⤊ 0⤋
-5(x + 4) > 3(x - 4)
-5x-20 > 3x-12 - EXPAND BRACKETS
-5x > 3x+8 - BRING THE -20 TO THE OTHER SIDE
-8x > 8 - BRING THE 3x TO THE OTHER SIDE
8x < -8 - TIMES BY -1 ALSO CHANGE INEQUALITY SIGN
x < -1 - DIVIDE BY 8
2007-11-18 09:26:00 · answer #2 · answered by wag1 2 · 0⤊ 0⤋
x<-1
2007-11-18 09:25:16 · answer #3 · answered by Anonymous · 1⤊ 0⤋
-5(x+4)>3(x-4)
-5x-20>3x-12
-20+12>3x+5x
-8 >8x
Dividing by 8,
-1>x
Therefore,x<-1
2007-11-18 09:24:33 · answer #4 · answered by Anonymous · 1⤊ 0⤋
-5(x + 4) is greater than 3(x - 4)
-5x - 20 is greater than 3x - 12
add 20 to both sides
-5x is greater than 3x + 8
take 3x from both sides
-8x is greater than 8
divide by -8
x is greater than -1
2007-11-18 09:30:21 · answer #5 · answered by crrllpm 7 · 0⤊ 0⤋