Question

A) 3 (X+62) = 6(X-62)


B) -2(X-62) = -3 (X+62)


C) -5 (X+62) = 10(X+62)


D) -7 (-X-62) = -5 (X-62)


E) -2 (-X+62) = -2 (-X- 62)

Answer 1

Resposta:

A) 186 = X

B) X = -310

C) -62 = X

D) X = -9,666...

E) X = 124÷0

Explicação:

A) 3×(X+62) = 6×(X-62)

3X+186 = 6X-372

186 = 6x-372-3x

186+372 = 6X-3X

558 = 3X

558÷3 = X

186 = X

B) -2×(X-62) = -3×(X+62)

-2X+124 = -3X-186

-2X = -3X-186-124

-2X+3X = -186-124

X = -310

C) -5×(X+62) = 10×(X+62)

-5X-310 = 10X+620

-310 = 10X+620+5X

-310-620 = 10X+5X

-930 = 15X

-930÷15 = X

-62 = X

D) -7×(-X-62) = -5×(X-62)

7X+434 = -5X+310

7X+434+5X = 310

7X+5X = 310-434

12X = -116

X = -116÷12

X = -9,666...

E) -2×(-X+62) = -2×(-X-62)

2X-124 = 2X+124

2X-124-2X = 124

2X-2X = 124

0X = 124

X = 124÷0