4 years ago

A student solved the problem below but made anerror. - 3x = 12+3 +3x = 15

Mathematics

2 answers:

garik1379 [7]4 years ago

5 0

Answer:

Division should be used instead of multiplication

-3x=12

x=-4 (divide by -3)

nataly862011 [7]4 years ago

4 0

Because -3x is one term, you need to divide both sides by -3, not add 3 to both sides:

-3x = 12

Divide both sides by -3:

-3x/3 = 12/-3

x = -4

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A student solved the problem below but made anerror. - 3x = 12+3 +3x = 15​

A student solved the problem below but made anerror. - 3x = 12+3 +3x = 15