asouthwards asouthwards

28-04-2018
Mathematics

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2x+3=5x-42 what is the number that belongs in the green box

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chrysanthemum chrysanthemum

28-04-2018

Objective: Solve 2x + 3 = 5x - 42 for x.

Step 1: Subtract 3 from both sides.

2x + 3 = 5x - 42
2x = 5x - 45

Step 2: Subtract 5x from both sides.

2x = 5x - 45
-3x = -45

Step 4: Divide both sides by -3.

-3x = -45
x = 15

Answer:
x = 15

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