-0,4a+2 и -0,4a-2. a=10 2+0,3a и 2,-0,3a. a=-9

Question

-0,4a+2 и -0,4a-2. a=10

2+0,3a и 2,-0,3a.
a=-9

Answer 1

1) -0.4x10+2=-2 -0.4x10-2=-6 2)2+0.3x(-9)=-0.7 2-093x(-9)=4.7

Comments

2-0.3x(-9)=4.7*