Respuesta:
[tex]7x + 9 = + 3(x + 1) - 8 \\ 7x + 9 = 3x + 3 - 8 \\ 7x - 3x = 3 - 8 - 9 \\ 4x = - 14 \\ x = \frac{ - 14}{4} [/tex]
[tex]7 \times \frac{ - 14}{4} + 9 = + 3( \frac{ - 14}{4} + 1) - 8 \\ \frac{ - 98}{4} + 9 = \frac{ - 42}{4} + 3 - 8 \\ \frac{ - 98 + 36}{4} = \frac{ - 42 + 12 - 32}{4} \\ \frac{ - 62}{4} = \frac{ - 62}{4} \\ \frac{ - 31}{2} = \frac{ - 31}{2} [/tex]
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Verified answer
Respuesta:
[tex]7x + 9 = + 3(x + 1) - 8 \\ 7x + 9 = 3x + 3 - 8 \\ 7x - 3x = 3 - 8 - 9 \\ 4x = - 14 \\ x = \frac{ - 14}{4} [/tex]
[tex]7 \times \frac{ - 14}{4} + 9 = + 3( \frac{ - 14}{4} + 1) - 8 \\ \frac{ - 98}{4} + 9 = \frac{ - 42}{4} + 3 - 8 \\ \frac{ - 98 + 36}{4} = \frac{ - 42 + 12 - 32}{4} \\ \frac{ - 62}{4} = \frac{ - 62}{4} \\ \frac{ - 31}{2} = \frac{ - 31}{2} [/tex]