2 years ago

3(x+ 7) = -12 x + 7 = X =

Mathematics

2 answers:

Varvara68 [4.7K]2 years ago

8 0

Answer:

x = - 11

x + 7 = -4

Step-by-step explanation:

$3(x + 7) = - 12$

Multiply each term in parentheses by 3

$3x + 3 \times 7 = - 12$

Multiply 3 and 7

$3x + 21 = - 12$

Move the constant to the right side and change the sign

$3x = - 12 - 21$

Find the sum of negative numbers

$3x = - 33$

Divide both side by the same number

$x = - 11$

= x + 7

= -11 + 7

Add the term - 11 + 7

= -4

NemiM [27]2 years ago

4 0

3(x + 7) = -12

x + 7 = -4

c = -11

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