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

Question

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

Solve 9 - c = -13

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Answer 1 · 2017-09-27T18:42:02

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

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#