Answer:
fish=3,5,15
snails=1,4,4
Step-by-step explanation:
Answer:
x=18
Step-by-step explanation:
6-x=-12
Subtracting 6 from both sides
-x=-12-6
-x= -18
Dividing both sides by -1
x=18
ANSWER:
◻ Rational no. —: Addition & Multiplication (Yes) and Subtraction & Division (No)
◻ Integers —: Addition & Multiplication (Yes) and Subtraction & Division (No)
◻ Whole no. —: Addition & Multiplication (Yes) and Subtraction & Division (No)
◻ Natural no. —: Addition & Multiplication (Yes) and Subtraction & Division (No)
A= 0,-3
D= -4,-3
C= 0,4
B= 3,3
Step-by-step explanation:
,
Let: x be Amy's marbles
3x be Robin's marbles
15+3x be Sam's marbles
x+3x+15+3x=99
7x+15=99
7x=99-15 (transfer 15 to the right side of the equation, then minus)
7x/7=84/7 (divide both sides of the equation by 7)
x=12
Now substitute:
x = 12 (Amy's)
3x = 3*12 = 36 (Robin's)
15+3x = 15+3*12 = 51 (Sam's)
12+36+51 = 99
Therefore, Amy has 12 marbles, Robin has 36 marbles and Sam has 51 marbles.
