-4x - 21 = -1 ------------------- m/3 + 12 = 18 ------------------- -2(6z - 5) = 58 ------------------- 4a - 7 + 3a + 2 = 30
+285 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
😎😎😎
+267 @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 -_-
