M^2+6m+9-(m^2+2m-2m-4)=6m+9+4=6m+13
Ответ ответ ответ ответ ответ ответ
<span>1. -4y-28=-44 </span>
<span>- 28 + 44 = 4у</span>
4у = 16
у = 4
2. <span> 0.5b-0.2=-5.7. </span>
<span>0.5b = -5.7 + 0.2</span>
<span>0.5b = -5.5</span>
<span>b= -11</span>
<span>3. <span> -0.6x-2.3=4.3</span></span>
-0.6x = 4.3 + 2.3
-0.6x = 6.6
x = -11
<span> 4. -7x-28=-3x-52</span>
<span>-7x + 3x = - 52 + 28</span>
10x = 24
x = 2.4
5. <span>0.9b-0.5=9.4</span>
<span>0.9b= 9.4 + 0.5</span>
<span>0.9b=9.9</span>
<span>b=11</span>
<span>6. </span><span><span>1-0.1d=2.1</span></span>
<span><span>-0.1d=2.1-1</span></span>
<span><span>-0.1d=1.1</span></span>
<span><span>d = -11</span></span>
:)