SOLUTION: Solve each system by substitution. Check your solution. 19. a-1.2b=-3 0.2b+0.6a=12

Algebra.Com
Question 249983: Solve each system by substitution. Check your solution.
19.
a-1.2b=-3
0.2b+0.6a=12

Answer by checkley77(12844)   (Show Source): You can put this solution on YOUR website!
a-1.2b=-3 or a=1.2b-3
0.2b+0.6a=12
.2b+.6(1.2b-3)=12
.2b+.72b-1.8=12
.92b=12+1.8
.92b=13.8
b=13.8/.92
b=15 ans.
a=1.2*15-3
a=18-3
a=15 ans.
Proof:
.2*15+.6*15=12
3+9=12
12=12

RELATED QUESTIONS

Solve each system by substitution. Check your solution. 19. a-1.2b=-3... (answered by checkley77,richwmiller)
solve each system of linear equations by elimination 3a-2b+4=0 2a-5b-1=0 (answered by Fombitz)
SOLVING SYSTEMS by SUBSTITUTION Solve each system by substitution. check your answer. (answered by asuar010,MathTherapy)
Method of Substitution 4. Solve by substitution. Check your solution. d) 3a+2b=4... (answered by solver91311)
Linear System Solve by elimination. Check each solution. a) 2a+b=5 a-2b=10 b)... (answered by solver91311)
Solve the system of linear equations by substitution. Check your solution. 4x + 2y =... (answered by addingup)
Please help me answer this problem: Worksheet says: Solve each system by... (answered by checkley71)
Please help me answer this problem: Worksheet says: Solve each system by... (answered by Osran_Shri)
Solve each system of equations. Check by substitution 5x + 3t = 19 5x - 3t = 1 (answered by MathLover1)