(7X+70):(3X+70)= 7:4
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(7X+70):(3X+70)= 7:4
(7X+70):(3X+70)= 7:4
(7X+70):(3X+70)= 7:4
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(7X+70):(3X+70)= 7: 4
7(3X+70)=4(7X+70)
21X+490=28X+280
7X=210
X=30
4(7X+70)=7(3X+70)
(7X+70):(3X+70)= 7: 4
4(7x+70)=7*(3x+70)
x=30
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