4x-3(x-2)=21
4x-3x+6=21
4x-3x=21-6
x=15
is this right? let's check
4(15)-3(15-2) = 21? yes
<span>Answer: 18/25 ; or, write as: 0.72 .
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Explanation:
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9/20 * 4/5 = (</span>9*4) / (10*5) = 36/50 ;
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36/50 = </span>(36÷2) / (50÷2) = 18/25 ; or, write as: 0.72 .
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The sentence "15% of 4x is 20 less than x"
translates to 0.15 • (4x) = x – 20
Solving that…
0.15(4x) = x - 20 multiplipy 0.15•4
0.6x = x - 20 subtract x from both sides
-0.4x = - 20 divide both sides by -0.4
x = 50
Part A.) the answer is B:9
Part B.) together their total score is -3
X-2=27
is this a good equations
