Question

Calcule as equações
A) 2x + 16 = - 5 +9

B) 8x-12=-2x+6

C) 9x+16=5x-12

Answer 1

A) 2x + 16 = - 5 +9 ==> 2X= 4 - 16 ==> 2x = - 12 ==> x = - 6
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B) 8x-12=-2x+6 ==>8x+2x=6+12==> 10x=18==> x = 18/10
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C) 9x+16=5x-12 ==>9x-5x = - 12 - 16 ==> 4x = - 28 ==> x = - 7

Answer 2

A) 2x=-16-5+9 X=-30/2 X= -15