7
3x5
math
95
This doesn't make any math sense:2⁴ - 1 + 21 = 14 = 7 +3 x 5
(2x3)+(3x5)-(3x2)= 2x3=6 3x5=15 3x2=6 So..... 6x25-6= 6x25=150 150+6=156
Ah, what a happy little question! The inverse operation of multiplication is division, so to find the inverse of 3x5 equals 15, you would divide 15 by 5 to get 3. Remember, math is like painting a beautiful landscape - just follow the steps with a gentle touch and you'll create something wonderful.
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.