Question

3x+50 2x+15 6x-20 xt​

Answer 1

Explicație pas cu pas:

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$2x + 15 + x + 45 = 180$

$3x = 180 - 60 \iff 3x = 120$

$x = 120 : 3 \implies x = 40$

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$5x + 25 + 10x - 35 = 180$

$15x = 180 + 10 \iff 15x = 190$

$x = 190 : 15 \implies x = \dfrac{38}{3}$

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$3x + 18 + 6x - 54 = 180$

$9x = 180 + 36 \iff 9x = 216$

$x = 216 : 9 \implies x = 24$

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$12x = 144 \iff x = 144 : 12 \\ \implies x = 12$

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$5x - 30 = 150 \iff 5x = 150 + 30$

$5x = 180 \iff x = 180 : 5 \implies x = 36$