Best Answer

put both equations in standard form

y - 3x = -5 (equation 1)

-7y + 21x = 35 (equation 2)

multiply equation 1 by 7 (this is done so either one of your variables will cancel... if both variables cancel then these lines are parallel)

7y - 21x = -35

-7y + 21x = 35

0 = 0

therefore your lines are parallel

Q: Where does y equals 3x-5 and 21x-35 equals 7y intersect on a graph?

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7

5x3=15 is the inverse

(2x3)+(3x5)-(3x2)= 2x3=6 3x5=15 3x2=6 So..... 6x25-6= 6x25=150 150+6=156

Commutivity of multiplication or the commutative property of multiplication.

15/40 = (3x5)/(8x5) = 3/8

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7

3x5

5x3=15 is the inverse

95

(2x3)+(3x5)-(3x2)= 2x3=6 3x5=15 3x2=6 So..... 6x25-6= 6x25=150 150+6=156

5+5+5

The generalisation is that multiplication is Abelian (or commutative) for numbers.

2+3*5 = 2 + 15 = 17

3x5+4=19

Commutivity of multiplication or the commutative property of multiplication.

15/40 = (3x5)/(8x5) = 3/8

r = 3 s = 5 t = 6 rs = 3x5 = 15 rt = 3x6 = 18 st = 5x6 = 30