Question

a. 7x - 15 = 20
b. -5x - 8 = 12
C. 4x -- 10 = 26
d. -- 6x - 18 = 16​

Answer 1

Respuesta:

$7x-15=20\quad :\quad x=5$

$5x-8=12\quad :\quad x=4$

$4x-\left(-10\right)=26\quad :\quad x=4$

$-\left(-6\right)x-18=16\quad :\quad x=\frac{17}{3}\quad \left(\mathrm{Decimal}:\quad x=5.66666\dots \right)$

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