Default equation solutions to 0
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@@ -1146,7 +1146,7 @@ if ( !function_exists( 'sp_get_eos_safe_slug' ) ) {
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}
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if ( !function_exists( 'sp_solve' ) ) {
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function sp_solve( $equation, $vars, $precision = 0, $default = '-' ) {
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function sp_solve( $equation, $vars, $precision = 0, $default = 0 ) {
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if ( $equation == null )
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return $default;
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