3 years ago

3x + 45 = 4x + 21 Solve for 'x'.

Mathematics

2 answers:

Naya [18.7K]3 years ago

6 0

Answer:

Step-by-step explanation:

$3x + 45 = 4x + 21 \\ collect \: like \: terms \\ 3x - 4x = 21 - 45 \\ - x = - 24$

$x = 24$

guajiro [1.7K]3 years ago

4 0

Answer:

Step-by-step explanation:

3x + 45 = 4x + 21

45 - 21 = 4x - 3x

24 = x

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