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-4x - 21 = -1 ------------------- m/3 + 12 = 18 ------------------- -2(6z - 5) = 58 ------------------- 4a - 7 + 3a + 2 = 30

 Jan 21, 2021
 #1
avatar+117 
+2

Are these 4 different questions?

 Jan 21, 2021
 #2
avatar+303 
+2

1. -4x-21=-1

-4x=20

x=-5

2. m/3+12=18

m/3=6

m=18

3. -2(6z-5)=58

-12z+10=58

-12z=48

z=-4

4. 4a-7+3a-2=30

7a=21

a=3

 

 

-hihihi

 

 

😎😎😎

 Jan 21, 2021
 #3
avatar+267 
+2

@cryptoaops: I'm pretty sure they are. To the first question: 

 

add 21 to both sides and divide both sides by -4 to get x=-5

 

To the second question: subtract 12 on both sides and multiply both sides by 3 to get m=18

 

To the third question: distribute and subtract 10 on both sides and divide both sides by -12 to get z=-4

 

To the last question: combine like terms and add the numbers and add 5 to both sides and divide both sides by 7 to get a=5

 

sniped -_-

 Jan 21, 2021
edited by KitSoundwave  Jan 21, 2021
edited by KitSoundwave  Jan 21, 2021

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