need homework help.......ASAP

janetfizz said:
I think the answer is 100 Is this correct?
To check the answer to any "solving" exercise, plug it back in to the original question:

. . . . .0.7x = 70

. . . . .0.7[100] ?=? 70

. . . . .(7/10)(100/1) ?=? 70

. . . . .(7/1)(10/1) ?=? 70

. . . . .70/1 ?=? 70

. . . . .70 = 70

Since the solution "checks", it is valid.

Eliz.
 
janetfizz said:
the problem is 0.7x=70 I think the answer is 100 Is this correct?
If decimals are confusing you, get rid of them;
in this case, multiply by 10:
7x = 700

S'that easier :?:
 
Top