Can you solve all these equations please ? Solve 4a+3=11

also solve 8= 3r - 1 Solve x+0.3=3.3

Solve 9 - c = -13

1 Answer
Sep 27, 2017

a=2
r=3
x=3
c=22

Explanation:

Equation 1
4a+3=11
subtract 3 from both side
=>4a+3-3=11-3
=>4a=8
divide by 4 in both side
=>(4a)/4=8/4
=>a=2

Equation 2
8=3r-1
add 1 to both side
=>8+1=3r-1+1
=>9=3r
divide by 3 in both side
=>(9)/3=(3r)/3
=>3=r
=>r=3

Equation 3
x+0.3=3.3
subtract 0.3 from both side
=>x+0.3-0.3=3.3-0.3
=>x=3

Equation 1
9-c=-13
subtract 9 from both side
=>9-c-9=-13-9
=>-c=-22
multiply by (-1) in both side
=>(-1)(-c)=(-1)(-22)
=>c=22