Question

please help. me to do this sum in any method from transposing or balancing if u help me I will make u as brain list please help me and show full method ​please it will a pleasure to me
Chapter name -Simple equation

Answer 1

Answer:

1. a+b=c

X+3= 12

X=12-3

X=9

2. a-b=c

x-7= 10

X=10+7

X=17

3. x\2+7 = 11

X+7=11 ×2

X+7=22

X=22-7

X= 15