Question

RESOLVA NA INCÓGNITAS X:
a) 3BX +6BC=7BX+3BC

Answer 1

3BX=7BX + 3BC - 6BC
= 3BX = 7BX - 3BC
= - 7BX + 3BX = - 3BC
= - 4BX = - 3BC
= X= - 3BC / - 4B
= X= 3C / 4