x = 3*0.4 = 1.2
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15 x 3 = 45, 45 + 4 = 49 Or 15 x (3+4) 7 = 105
To find the number you need to multiply by 3 to get 45, you can set up the equation 3x = 45, where x is the unknown number. To solve for x, you divide both sides by 3, which gives you x = 45 / 3. Therefore, you need to multiply 3 by 15 to get 45.
not by an exact number 15 x 3 = 45 15 x 4 = 60 56/15 = 3.7333
(25/100) x 15 = 3.75 or 15 x 0.25 = 3.75 or 15 x 1/4 = 3.75
1 x 45, 3 x 15, 5 x 9, 9 x 5, 15 x 3, 45 x 1 = 45