How do you solve $4.2 = 3.4 + - 2 u$ $4.2= 3.4+ - 2u$ ?

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Answer 1 · 2018-01-17T00:15:01

$u = - (\frac{2}{5})$ $u=-(2/5)$

Step-by-step process:

$4.2 = 3.4 + (- 2 u)$ $4.2=3.4+(-2u)$

$4.2 = 3.4 - 2 u$ $4.2=3.4-2u$

move the decimal point

$42 = 34 - 20 u$ $42=34-20u$

$42 = 34 - 20 u$ $42=34-20u$
$- 34 - 34$ $-34 -34$

$8 = - 20 u$ $8=-20u$

( $8 \div - 20) = (- 20 u \div - 20$ $8-:-20)=(-20u-:-20$ )

$u = - (\frac{2}{5})$ $u=-(2/5)$

Hope this helped you! =D

How do you solve 4.2=3.4+−2u4.2= 3.4+ - 2u?