Solve the equation three eighths + x = two fifths

Solve the equation three eighths + x = two fifths

Three eighths + x = two fifths
x=1/40

If the sum of two nonzero rational numbers equals zero, then their quotient is zero

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If the sum of two non-zero rational numbers equals zero, what is their quotient?

1

(1) If a > 0, then a / | a|=_____ If A0, then a / | a|=_____ If a

(1) If a > 0, then a / | a|=___ 1__ If A0, then a / | a|=___ 1__ If A0, b > 0: the value of a / | a | + B / | B |, is 1 + 1 = 2
a>0,b

What's the difference between 3.75 times the product of one and a fifth and 2.5 minus one and a third

3.75×6/5÷2.5-4/3
=4.5÷2.5-4/3
=1.8-4/3
=18/10-4/3
=54/30-40/30
=14/30
=7/15

(2) 4.1 times 2.72 minus 1.53, what is the quotient of the product divided by 24.395
There should be a formula

①（18*3/4）/（1/4)
=（27/2)/(1/4)
=54
②[4.1*（2.72-1.53）]/24.395=0.2

12.8 minus the sum of 6.2 and 3.5, what is the product of the difference multiplied by 4? What is the number 20% more than 18?

1)【12.8-（6.2+3.5）】*4=12.4
2) This number is 18 * (1 + 20%) = 21.6

What is the quotient of the product of 24 and 3 minus 336?

Quotient: 336 ^ (100-24x3)
=336÷（100-72）
=12

What's the product of 576 minus 24 divided by 840 and multiplying by 58

(576-24)/840*58=38

[1 / 18-1 / 54] / 1 / 54

[1 / 18-1 / 54] / 1 / 54
=[1/18-1/54]*54
=1/18*54-1/54*54
=2