3 years ago

What is 1.8r+9=-5.7r-6

Mathematics

2 answers:

jeyben [28]3 years ago

8 0

Add 6 to booth sides.

1.8r+15=5.7r
Subtract 1.8 from both sides
15=3.9r
Divide 15 by 3.9
3.8=r

qwelly [4]3 years ago

5 0

You could do:
1 subtract 9 on both sides of the equation, 1.8r=-5.7r-15
2 then add 5.7r on both sides as well, 7.5r=15
3 divide 7.5 on each side, r=2.

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