Question #5d429

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Answer 1 · 2017-12-17T21:12:43

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1) $- 5.5 x + 0.56 = 1.64$ $-5.5x+0.56=1.64$
Step 1: Subtract $0.56$ $0.56$ from both sides.

$-5.5xcancel(+0.56)cancel(-0.56)=1.64-0.56$
$-5.5x=1.08$

Step 2: Divide both sides by $-5.5$ .

$(-5.5x)/-5.5=1.08/-5.5$
$(cancel(-5.5)x)/cancel(-5.5)=-0.196bar36$

Solution: $x=-0.196bar36$

2) $-4.2+31.5=-65.1$
Did you type this question wrong?

3) $k/5.2+81.9=47.2$
Step 1: Subtract $81.9$ from both sides.

$k/5.2cancel(+81.9)cancel(-81.9)=47.2-81.9$
$k/5.2=-34.7$

Step 2: Multiply both sides by $5.2$ .
$cancel5.2*k/cancel5.2=-34.7/5.2$

Solution: $k=-6.67bar307692$