Answer:
a=1
Step-by-step explanation:
a+3=2a+2
Take away 3 from both sides
a=2a-1
Take away 2a from both sides
-a=-1
Multiply by -1
a + 3 = 2a + 2
move 2a to the other side
sign changes from +2a to -2a
a-2a+3= 2a-2a + 2
a-2a+3=2
-a+3=2
move 3 to the other side
-a+3-3= 2-3
-a= 2-3
-a= -1
mutiply both sides by -1 to get +a
(-1)(-a)=(-1)(-1)
a= 1
This is guess of what the question is asking:
I had got 49x - 21y - 6.
7 x 7 is 49 and 7 x 3 is 21.
12
