Question

solve= 0.3(4z-6) =0.5(2z+9)
answer is 63/2 how????
​

Answer 1

Answer:

0.3(4z-6)=0.5(2z+9)

We move all terms to the left:

0.3(4z-6)-(0.5(2z+9))=0

We multiply parentheses

1.2z-(0.5(2z+9))-1.8=0

We calculate terms in parentheses: -(0.5(2z+9)), so:

0.5(2z+9)

We multiply parentheses

z+4.5

Back to the equation:

-(z+4.5)

We get rid of parentheses

1.2z-z-4.5-1.8=0

We add all the numbers together, and all the variables

0.2z-6.3=0

We move all terms containing z to the left, all other terms to the right

0.2z=6.3

z=6.3/0.2

z=31+0.1/0.2

Step-by-step explanation:

hello plz can u inbox me

Answer 2

Answer:

follow and MARK BRAINLIEST if helpful

Step-by-step explanation:

0.3 (4z-6) = 0.5 (2z+9) (multiply 0.3 and 0.5 with bracket)

0.3 (4z-6) = 0.5 (2z+9)

1.2z - 1.8 = 1.0z + 4.5

1.2z -1.0z = 4.5+ 1.8

0.2z = 6.3

z = 6.3 (eliminate decimal)

0.2

z = 63×10

2 ×10

z = 63

2