SOLUTION: multiply -4*(-5)*(-4)*(-7)

Algebra.Com
Question 269160: multiply -4*(-5)*(-4)*(-7)
Found 2 solutions by persian52, JBarnum:
Answer by persian52(161)   (Show Source): You can put this solution on YOUR website!
Here's a step by step multiplying
-4*(-5)*(-4)*(-7)
Multiply all the factors separated by a * in -4*(-5)*(-4)*(-7).
-4(-5)(-4)(-7)
Multiply -5 by -4 to get 20.
-4(20)(-7)
Multiply 20 by -7 to get -140.
-4(-140)
Multiply -4 by each term inside the parentheses.
Answer: 560

Answer by JBarnum(2146)   (Show Source): You can put this solution on YOUR website!

to make this easy count how many negative"-" signs you have in the multiplication problem. Odd amount(1,3,5,7,9...) will always give u a negative number and and even amount (2,4,6,8...)will always give u a possitive number.
so from the problem there are 4 negative signs so you know the answer will be possitive.
so then u can rewrite the problem as
now simply multiply in order



so 560 is the answer

RELATED QUESTIONS

Multiply... (answered by wilft1)
MULTIPLY 3/5 X 2... (answered by fractalier)
MULTIPLY(-4/7)(28) (answered by stanbon)
multiply -7(2a^... (answered by MathLover1)
multiply 5/4 *(1/4) (answered by Mr. Math Wiz)
reducing before you multiply as a timesaver??? equation...... 4/5 multiply... (answered by MathLover1)
Multiply (x-4)(3x-5) (answered by lonelyday91)
Multiply.... (answered by Fombitz)
Multiply.... (answered by Fombitz)