eddiecas
11.09.2019 •
Mathematics
Evaluate the expression for the given value of the variable.
|
−
4
b
−
8
|
+
∣
∣
−
1
−
b
2
∣
∣
+
2
b
3
;
b
=
−
2
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Ответ:
ok so rememmber you can do anythiing to an equation as long as you do it to both sides
-0.3x+2=0.4x-0.1
add 0.3x to both sides
2=0.7x-0.1
add 0.1 to both sides
2.1=0.7x
times 7 both sides
21=7x
divide both sides by 7
3=x