A pineapple is 7 times as heavy as an orange. the pineapple also weights 870 grams more than the orange.

what is the total weight in grams for the pineapple and orange?

the orange weighs 120 grams

Step-by-step explanation:

Let the value x represent the orange's weight.

x + 870 = 7x

Move all you x values to one side by subtracting. You are trying to isolate x and divide.

870 = 6x

divide both sides by 6.

870/6 = x

x = 120