how can i solve 7c+12=-4c+78
7c+ 12= -4c+ 78⇒ 7c+ 4c= 78 -12 (inverse operation)⇒ 11c= 66⇒ c= 66/11 (inverse operation)⇒ c= 6Final answer: c= 6.
cancel each type...7c+12=-4c+78+4c +4c11c+12=78 -12 -12 11c=66÷11 ÷11=c=6answer=6 hope it helps....