Solve each question mentally -3x = 21
1 answer:
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(4/9)/(2/3)/(5/6)
First, invert and multiply. / Your problem should look like:
× 
Second, invert and multiply. / Your problem should look like:
× 
×
Third, apply this rule:
× 
. / Your problem should look like: 
Fourth, simplify 4 × 3 × 6 to 72. / Your problem should look like:
Fifth, simplify 9 × 2 × 5 to 90. / Your problem should look like:
Sixth, simplify. / Your problem should look like:
Original answer:
Answer as decimal: 0.8
First, invert and multiply. / Your problem should look like:
Second, invert and multiply. / Your problem should look like:
Third, apply this rule:
Fourth, simplify 4 × 3 × 6 to 72. / Your problem should look like:
Fifth, simplify 9 × 2 × 5 to 90. / Your problem should look like:
Sixth, simplify. / Your problem should look like:
Original answer:
Answer as decimal: 0.8