To solve a linear equation with decimals, the usual first step is to multiply by a power of 10 so that all coefficients are integers. What is the least power of 10 that will
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accomplish this goal in each equation?
(a) 0.11y+0.03(y+2000) = 900
(b) 0.007(z+6)=0.013z +0.011
(a) 0.11y+0.03(y + 2000) = 900 should be multiplied by ____