Sagot :
1.How to solve your problem
+ 13=11
Subtract 13 from both sides of the equation
+ 13= 11
+ 13-13=11-13
Simplify
Subtract the numbers
Subtract the numbers
= --2
Solution
= -2
2.How to solve your problem
4y - 9 = - 2y
Add 9 to both sides of the equation.
4y -9=2y
4y-9+9= - 2y +9
Simplify
Add the numbers
4y= -2y+9
Add 2y to both sides of the equation
4y=2y+9
4y+2y= - 2y + 2y
Solution
3
y= -
2
3.How to solve your problem
5 - z = 2z - 37
Rearrange terms
5−=2−37
−+5=2−37
Subtract 5 from both sides of the equation
−z+5=2−37
−+5−5=2−37−5
Subtract the numbers
Subtract the numbers
−=2−42
Solution
=14
4.How to solve your problem
10−3(+2)=4−1
Distribute
10−3(+2)=4−1
10−3−6=4−1
Solution
5
a= -
7
7.How to solve your problem
6+3(1+)=(−7)−2
Rearrange terms
6+3(1+)=(−7)−2
6+3(+1)=(−7)−2
Solution
d=−1