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7. Quinn had 3 more than two times the number of marbles Rowan has. Together they have 77marbles. How many marbles does each child have?

Respuesta :

Explanation:

Let the number of marbles Rowan has = x

Two times x = 2x

3 more than two times the number of marbles Rowan has = 2x + 3

Quinn = 2x + 3

Together they have = 77 marbles

Rowan marbles + Quinn marbles = 77

x + (2x + 3) = 77

x + 2x + 3 = 77

Collect like terms:

3x = 77-3

3x = 74

Divide through by 3:

x = 74/3

x = 24.7

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