= 3 × 10-11
(scientific notation)
= 3e-11
(scientific e notation)
= 30 × 10-^12
(engineering notation)
(trillionth; prefix pico- (p))
= 0.0000000000
<span>(real number)</span>
-2(1+2x)=7-x
-2(1)=-2 -2(2x)=-4x rewrite
-2-4x=7-x combine like terms add two to both sides 7+2=9; add x to both sides -4x+x=-3x rewrite -3x=9 divide -3 from both sides 9/-3=-3 rewrite
X=-3
Hope this helps have a nice day!