4 years ago

Solve for x 3(x + 4) = 21

Mathematics

2 answers:

Amanda [17]4 years ago

4 0

Answer:

x=3

Step-by-step explanation:

3+4=7

3x7=21

Tatiana [17]4 years ago

4 0

Answer:

x=3

Step-by-step explanation:

3(x+4) = 21

3x+12 = 21

3x+ 12 = 21

-12 = + 12

3x = 9

$\frac{3x}{3}$ = $\frac{9}{3}$

x = 3

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