Question

Solve the equation.

2x − 3 + 4x = 21

x = −12
x = −6
x = 4
x = 6

Answer 1

Answer:

$2 \times4 - 3 + 4 \times 4 = 21 \\ 8 - 3 + 16 = 21 \\ 5 + 16 = 21$

Answer 2

Answer:

$= > 2x - 3 + 4x = 21 \\ \\ = > 6x - 3 = 21 \\ \\ = > 6x = 24 \\ \\ = > x = \frac{24}{6} \\ \\ = > x = 4$

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