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Two fifths of a number minus 4.2 and its tenth to find the number
X*2/5-4.2=X*3/10
X=42
What is the sum of two-thirds and two-thirds of a number? Two fifths minus four equals three tenths of a number
Number of Solutions
Let this number be X
2/3x+2/3=3
2/3x=7/3
x=7/2
Ask Video: there is a number, big two fifths minus 4.2 and it's three tenths equal, find this number (with equation solution) help
Formula: 4.2 ÷ (2-5-3-10)
=4.2÷1\10
=4.2×10
=42
Equation: this number is X
X2\5-4.2=3\10X
(2\5-3\10)X=4.2
1\10X=4.2
X=4.2÷10
X=42
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