To add the same value to all sides of a equation
well what do you expect. "For every action, there is an equal or opposite reaction." There is subtraction, and the opposite is addition.
Both state that the whole is equal to the sum of the component parts.
If 20/50 questions were addition problems, this is equal to 2/5 or two fifths.
12 cm
3
4
If they are of equal magnitude and opposite direction.
well what do you expect. "For every action, there is an equal or opposite reaction." There is subtraction, and the opposite is addition.
12
Both state that the whole is equal to the sum of the component parts.
20 +20+3+3=46
The addition of 2, 3 and 5.
If 20/50 questions were addition problems, this is equal to 2/5 or two fifths.
Because Algebra said so
he thought of a way of introducing a way of telling how many objects all together equal addition
165 + 165 = 330
12 cm