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V

vipboycodon

10+2x=45:4310+2x = 4^5:4^3
<=> 10+2x=4210+2x = 4^2
<=> 2x=16102x = 16-10
<=> 2x=62x = 6
<=> x=3x = 3

7059(x3)=4570-59(x-3) = 45
<=> 7059x+177=4570-59x+177 = 45
<=> 59x=4570177-59x = 45-70-177
<=> 59x=202-59x = -202
<=> x=20259x = \dfrac{202}{59}

4x3+15=474x^3+15 = 47
<=> 4x3=47154x^3 = 47-15
<=> 4x3=324x^3 = 32
<=> x3=8x^3 = 8
<=> x=2x = 2
 
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D

duc_2605

70-59(x-3)=45
70 - (59x - 177) = 45
\Rightarrow 59x - 177 = 70 - 45
\Rightarrow 59x - 177 = 25
\Rightarrow 59x = 25 + 177 = 202
\Rightarrow x = 202 : 59 = 202/59
 
A

anh_em_02

4x3+15=474x^3+15=47

4x3=4715=324x^3=47-15=32

x3=32:4=8x^3=32:4=8

8=238=2^3

x=2x=2
 
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