How do you solve $8 = 4 (8 - 9) - 7 x$ $8=4(8-9)-7x$ ?

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How do you solve $8 = 4 (8 - 9) - 7 x$ $8=4(8-9)-7x$ ?

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Answer 1 · 2018-06-15T10:39:01

$x = - \frac{12}{7}$ $x=-12/7$

Explanation:

$simplify the right side$ $"simplify the right side"$

$8 = 4 (- 1) - 7 x = - 4 - 7 x$ $8=4(-1)-7x=-4-7x$

$add 4 to both sides$ $"add 4 to both sides"$

$12 = - 7 x$ $12=-7x$

$divide both sides by - 7$ $"divide both sides by "-7$

$\frac{12}{- 7} = x \to x = - \frac{12}{7}$ $12/(-7)=xtox=-12/7$

$As a check$ $color(blue)"As a check"$

Substitute this value into the right side of the equation and if equal to the left side then it is the solution.

$- 4 - (7 \times - \frac{12}{7}) = - 4 - (- 12) = - 4 + 12 = 8$ $-4-(7xx-12/7)=-4-(-12)=-4+12=8$

$x = - \frac{12}{7} is the solution$ $x=-12/7" is the solution"$

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How do you solve $8 = 4 (8 - 9) - 7 x$ $8=4(8-9)-7x$ ?

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How do you solve 8=4(8-9)-7x8=4(8−9)−7x8=4(8-9)-7x?

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How do you solve $8 = 4 (8 - 9) - 7 x$ $8=4(8-9)-7x$ ?